Annabelle works in a deli and has been tracking the daily sales of different items over several months. Annabelle found that when there was an increase in the number of cups of hot chocolate sold, the number of cups of coffee sold also increased. Similarly, when there was a decrease in the number of cups of hot chocolate sold, the number of cups of coffee also decreased.

Which of the following is a valid conclusion?

A.
There is no correlation between the sale of hot chocolate and the sale of coffee.
B.
The increase in the sale of hot chocolate caused an increase in the sale of coffee.
C.
The increase in the sale of hot chocolate is correlated to, but not caused by, the sale of coffee.
D.
No conclusion can be drawn about the correlation or causation of the sale of hot chocolate and the sale of coffee.

Answer: should be -6

Step-by-step explanation:

Set the expression to equal zero

z+6

Solve the equation

z+6+0

State the root

z+-6

Answer:

544 in²

Step-by-step explanation:

Find the area of the rectangle, then the triangle, then add them together to get the total SA.

Rectangle = l x w = 10 x 14 = 140 in²

SA of the 2 rectangular sides = 140 x 2 = 280 in²

Triangle = 1/2bh = 1/2(12)(8) = 48²

SA of the 2 triangular ends = 2 x 48 = 96 in²

Rectangular base = 14 x 12 = 168 in²

Total SA = 280 + 96 + 168 = 544 in²

If no two ladies sit together, there are 13,228,800,000 distinct ways to arrange the 11 males and 8 women in a row.

If no 2 women can sit together, then we can think of the men and women as distinct blocks that must alternate. Since there are 11 men and 8 women, there must be 12 positions available for these blocks: M_W_M_W_M_W_M_W_M_W_M_W.

The first block can be filled In 11! Ways (11 men to choose from), the second block can be filled in 8! Ways (8 women to choose from), the third block can be filled in 10! Ways, the fourth block can be filled in 7! Ways, and so on. So the total number of ways to seat the group is:

11! * 8! * 10! * 7! * 9! * 6! * 8! * 5! * 7! * 4! * 6! * 3! * 5! * 2! * 4! * 1! * 3! * 2! * 1!

Simplifying this expression, we get:

(11! * 8! * 10! * 7! * 9! * 6! * 8! * 5! * 7! * 4! * 6! * 3! * 5! * 2! * 4! * 1! * 3! * 2! * 1!) =

(11! * 10! * 9! * 8! * 7! * 6! * 5! * 4! * 3! * 2! * 1!) * (8! * 7! * 6! * 5! * 4! * 3! * 2! * 1!) =

11! * 10! * 9! * 8! * 7! * 6! * 5! * 4! * 3! * 2! * 1! * 8! * 7! * 6! * 5! * 4! * 3! * 2! * 1! =

11! * 10! * 9! * 8! * 7! * 6! * 5! * 4! * 3! * 2! * 8! * 7! * 6! * 5! * 4! * 3! * 2!

= 11! * 10! * 9! * 8! * 7! * 6! * 5! * 4! * 3! * 2! * 8!^2 * 7!

We can evaluate this expression with a calculator to obtain:

(111098765432)(887654327) = 13,228,800,000

Therefore, there are 13,228,800,000 different ways to seat the 11 men and 8 women in a row if no 2 women are to sit together.

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8 Cans of mandarin oranges are needed to serve a part of 200 people if each person is to receive a 3-ounce serving and each can weights 5 pounds 10 oz (9 ounces of that as liquid which you will discard).

Given that each can of mandarin oranges weighs 5 pounds 10 oz (9 ounces of that as liquid which you will discard).We are to find out how many cans of mandarin oranges are needed to serve a part of 200 people if each person is to receive a 3-ounce serving.

Convert 3 ounces into pounds and ounces

3 ounces = 3/16 pound (1 pound = 16 ounces)

Amount of mandarin oranges required by one person = 3/16 pound

Amount of mandarin oranges required by 200 people = 200 * (3/16) pound

Amount of mandarin oranges required by 200 people = 37.5 pound

Convert the amount of mandarin oranges required into cans

Weight of one can of mandarin oranges = 5 pounds 10 oz = (5*16 + 10) ounce = 90 ounce

Weight of mandarin oranges only in one can = 90 ounce - 9 ounce = 81 ounce (9 ounce is liquid which you will discard)

Number of cans required = (total weight required) / (weight of one can)Number of cans required = (37.5 * 16) / 81 Number of cans required = 7.4 cans

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The phrase "the number of shoes sold changes inversely with price" suggests that as the price of the shoes rises, so does the number of shoes sold, and vice versa.

We know that 2000 shoes can be sold for $250 in this circumstance. Using the inverse variation formula, we can write: k/Price = number of shoes sold where k is a proportionality constant. We may use the following information to calculate the value of k: 2000 = k/250 When we multiply both sides by 250, we get: k = 500000 In this case, the equation for the inverse variation is: Price/number of shoes sold = 500000 We may use this equation to compute the number of shoes sold at various prices. For instance, if the price is If the price is $300, the number of shoes sold is: The number of shoes sold is 500000/300, which is 1666.67. As a result, at a price of $300, about 1666.67 pairs of shoes would be sold.

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What is the relationship between the number of shoes sold and the price, given that the number of shoes sold varies inversely with the price? If 2,000 shoes are sold at a price of $250, what would be the price of the shoes if 3,000 shoes are sold?

To find a nonzero solution to a system of homogeneous equations, the corresponding matrix must be singular, meaning it has no inverse and its determinant is zero, allowing for the existence of eigenvectors corresponding to the eigenvalue λ = 0.

When we have a system of homogeneous equations, it means that all the equations in the system have a right-hand side of zero. Such a system can be written as Ax = 0, where A is the coefficient matrix and x is the column vector of variables.

To find a nonzero solution, we need to find a value of x such that Ax = 0, but x ≠ 0.

If A is a singular matrix, it means that it has no inverse, and its determinant is zero. This implies that the rows of A are linearly dependent, which in turn means that the columns of A are also linearly dependent. In other words, some of the columns of A can be expressed as linear combinations of the others.

When we multiply a singular matrix A by any nonzero vector x, we get a linear combination of its columns that equals zero, since the columns of A are linearly dependent.

Therefore, we can always find a nonzero vector x that satisfies Ax = 0. This nonzero vector x is called an eigenvector corresponding to the eigenvalue λ = 0, which is the only eigenvalue of a singular matrix.

Hence, finding a nonzero solution to a system of homogeneous equations requires that the matrix corresponding to this system is singular because only singular matrices have eigenvectors corresponding to the eigenvalue λ = 0, which are the solutions to the homogeneous equation Ax = 0.

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Yes, it is possible to have a c2 strictly convex function on a compact domain that is not also strongly convex.

Let's have a look at the following details of it.

A strictly convex function is a function whose Hessian matrix is positive-definite for all arguments. As a result, if f is differentiable and convex, it is strictly convex if and only if its Hessian matrix is positive-definite for all arguments.

The Definition of Strong Convexity: A function is said to be strongly convex if it meets the following criteria:
Let C be a convex subset of a Hilbert space H, and let f:C→ℝ be a continuously differentiable function. There is a positive constant μ such that, for all x,y∈C: f(y)≥f(x)+⟨∇f(x),y−x⟩+μ/2‖y−x‖2

Thus, it is clear from the above-mentioned definitions that it is possible to have a c2 strictly convex function on a compact domain that is not also strongly convex.

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A candidate's final multiple score main answer can have a maximum of three cumulative Pass Not Advanced (PNA) points applied to it.

PNA points are a form of assessment for a candidate's answers to multiple-choice questions.

They are awarded when the candidate selects an answer that is not necessarily wrong, but does not go into sufficient depth or demonstrate the required level of understanding.

Each PNA point is worth a fraction of a mark, with a total of three PNA points making up one mark of the candidate's final multiple score main answer.

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The function represents exponential decay with a rate of 4.98% per time unit.

An exponential function is a mathematical function of the form f(x) = a^x, where a is a positive constant (called the base) and x is a variable that can take on any real value. The exponent x determines how quickly the function grows or decays.

If a is greater than 1, the function represents exponential growth, since each increment of x leads to a proportionally greater increase in the function value. If a is between 0 and 1, the function represents exponential decay, since each increment of x leads to a proportionally smaller decrease in the function value.

For example, the function f(x) = 2^x represents exponential growth, since each time x increases by 1, the value of the function doubles. On the other hand, the function g(x) = (1/2)^x represents exponential decay, since each time x increases by 1, the value of the function is halved.

The given function is y = 990(0.95)ˣ.

We can determine whether the change represents growth or decay by looking at the base of the exponential term, which is 0.95. Since this value is between 0 and 1, we know that the function represents decay.

To determine the percentage rate of decrease, we can compare the value of the function at x=0 (the initial value) with the value of the function at x=1 (one time unit later).

When x=0, we have:

y = 990(0.95)⁰ = 990

When x=1, we have:

y = 990(0.95)¹ = 940.5

Therefore, the percentage rate of decrease is:

[(990-940.5)/990] x 100% = 4.98%

So the function represents exponential decay with a rate of 4.98% per time unit.

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Answer:

To find the number of people who can have a full serving of trail mix from 50 ounces, we need to divide the total amount of trail mix by the amount of trail mix per serving.

50 ounces of trail mix / 12 ounces per serving = 4.1667 servings

Since we can't have a fraction of a serving, we need to round down to the nearest whole number.

So, Victor can make 4 servings of trail mix from 50 ounces. Therefore, 4 people can have a full serving of trail mix.

Move all terms not containing the variable from the center section of the inequality.

The mole is currently considered a base unit in the SI system, but it was not always the case. Until 2019, it was defined as a derived unit, which was dependent on the kilogram, which is one of the seven SI base units. However, the mole was redefined in 2019 as an independent base unit, with a fixed value based on the Avogadro constant, which is a fundamental constant of nature.

The mole is a crucial unit in chemistry, as it provides a means to measure the amount of a substance on a molecular scale. It is a unit of measurement for the number of particles (such as atoms, molecules, or ions) in a given sample. Thus, the mole is not a unit of measure in the way that meters, seconds, and kilograms are. Instead, it is a measure of the number of particles present in a sample, and it is used to calculate other properties such as molar mass, molarity, and stoichiometry.

While calculations performed with the number of moles of a substance could also be performed with the number of particles of a substance, the mole is still considered a base unit in the SI system because it is a fundamental unit that provides a bridge between the macroscopic and microscopic worlds. It is an essential unit for chemists and physicists, and its inclusion as a base unit in the SI system reflects its importance in these fields.

In summary, while the mole is not a unit of measure in the same way as meters, seconds, and kilograms, it is still considered a base unit in the SI system because of its importance in chemistry and physics. Its inclusion as a base unit reflects its fundamental role in these fields, and its recent redefinition as an independent base unit highlights its significance as a measure of the number of particles in a sample.

Answer:

Step-by-step explanation:

150.7083

There are 52 weeks of data included in this frequency distribution.

The given frequency distribution displays the weekly sales of a certain brand of television at an electronics store.

We need to find the number of weeks of data included in this frequency distribution.From the given data, we can see that the frequency column represents the number of televisions sold per week.

To find the number of weeks of data included, we need to sum up the frequency column. Summing up the frequency column gives us:12 + 5 + 5 + 5 + 25 = 52

Therefore, there are 52 weeks of data included in this frequency distribution.

The given frequency distribution displays the weekly sales of a certain brand of television at an electronics store. We need to find the number of weeks of data included in this frequency distribution.

From the given data, we can see that the frequency column represents the number of televisions sold per week. To find the number of weeks of data included, we need to sum up the frequency column. Summing up the frequency column gives us:

12 + 5 + 5 + 5 + 25 = 52

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If the zeros are 2, 8i, and -8i, the the polynomial has factors of (x-2), (x-8i), and (x+8i).

If we multiply those factors, we'll get our polynomial:

    (x-2)·(x-8i)·(x+8i) = (x-2)·(x^2+64)

                               = x^3 - 2x^2 + 64x - 128

The number of groups of five courses the student can select for the next semester is 126.

In order to answer this question, we must first determine how many courses the student has already taken. If the student has already taken 11 courses, then the total number of courses she needs to take is 9.

We can use the formula for combinations, nCr, to calculate the number of groups of five courses that she can select for the next semester. The formula is nCr=n!/(r!(n-r)!). In this case, n is the total number of courses (9) and r is the number of courses in each group (5).

Therefore, the number of groups of five courses the student can select for the next semester is 9C5, or 9!/[5!(9-5)!], which equals 126. This means the student can select 126 different groups of five courses for the next semester.

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the surface area of the prism is 706 cm². To find the surface area of a prism, we need to add up the areas of all its faces.    

A prism is a three-dimensional shape that has two parallel and congruent bases that are connected by rectangular sides. Therefore, the surface area of a prism consists of two congruent base areas and the area of all rectangular sides.    

In this case, we have a rectangular prism with a length of 13 cm, a width of 16 cm, and a height of 5 cm. To find the surface area, we can start by calculating the area of the two rectangular bases. The area of a rectangle is found by multiplying its length by its width, so the area of each base is 13 cm x 16 cm = 208 cm².

Next, we need to calculate the area of all four rectangular sides. Since there are four sides, we need to multiply the perimeter of the base (the sum of the lengths of all four sides) by the height of the prism. The perimeter of the base is 2(13 cm + 16 cm) = 58 cm, so the total area of all four rectangular sides is 58 cm x 5 cm = 290 cm².

Finally, we can find the total surface area of the prism by adding the areas of the two bases and the area of all four sides. Therefore, the surface area of the prism is:

Surface area = 2(base area) + (area of all sides)

Surface area = 2(208 cm²) + 290 cm²

Surface area = 706 cm²

Therefore, the surface area of the prism is 706 cm². It is important to understand how to find the surface area of different shapes since it is a common concept in mathematics and is often used in real-life applications, such as calculating the amount of paint needed to cover a surface or the amount of wrapping paper needed to wrap a gift box.

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Answer:

Mira's monthly income: Rs. 55,000

Allowance: Rs. 3,000

Total monthly income before festival expenses: Rs. 58,000

Festival expenses (equivalent to monthly basic salary): Rs. 55,000

Total monthly income including festival expenses: Rs. 113,000

Amount deducted for provident fund (10% of monthly income excluding allowance and festival expenses):

10% of (Rs. 55,000) = Rs. 5,500

Total monthly deduction for provident fund: Rs. 5,500

Taxable income:

Total monthly income including festival expenses - Total monthly deduction for provident fund = Rs. 107,500

To calculate the annual tax to be paid by Mira, we need to know the income tax rates and tax slabs applicable for the current financial year. Without this information, we cannot provide an accurate answer

Alden probably used the observational method to collect data for his box plot.

What is a case study?

A case study is an in-depth study on a particular topic collecting information in various ways in a real-world context. Using a range of data sources, a case study permits the analysis of a genuine topic within a specified framework.  Here Alden is conducting his own case study on Calories in Sodas.

In a case study, data is collected through various methods including the observational method, survey method, interview, etc. The observational method is observing the event or stimulus in real time and recording of its data. Therefore, Alden could have employed the observational method by visiting a nearby store and reading and recording the various labels of sods for their data.

And so, Alden collected the data for his box plot using the observational method.

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The expression given as 11 + 8p²q² - 9pq - 8 - 20p²q² + 22pq when simplified is 3 +13pq - 12p²q²

Given that

11 + 8p²q² - 9pq - 8 - 20p²q² + 22pq

The given expression 11 + 8p²q² - 9pq - 8 - 20p²q² + 22pq contains several terms with different variables and exponents.

To simplify the expression, we need to combine the like terms.

So, we have

11 + 8p²q² - 9pq - 8 - 20p²q² + 22pq = 11 - 9pq - 8 - 12p²q² + 22pq

Similarly, we can combine the other terms

So, we have

11 + 8p²q² - 9pq - 8 - 20p²q² + 22pq = 3 +13pq - 12p²q²

So, the solution is 3 +13pq - 12p²q²

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The perimeter of  isosceles triangle PRQ is 24.65 units.

The lengths of its three sides and add them up. We can use the distance formula to find the length of each side.

Distance formula: The distance d between two points (x1, y1) and (x2, y2) is given by:

d = [tex]sqrt((x2 - x1)^2 + (y2 - y1)^2)[/tex]

Using this formula, we can find the lengths of the sides PR, RQ, and PQ.

PR = [tex]sqrt((-1 - (-7))^2 + (4 - (-1))^2) = sqrt(36 + 25) = sqrt(61)[/tex]

RQ =[tex]sqrt((3 - (-1))^2 + (-1 - 4)^2) = sqrt(16 + 25) = sqrt(41)[/tex]

PQ = [tex]sqrt((3 - (-7))^2 + (-1 - (-1))^2) = sqrt(100) = 10[/tex]

Therefore, the perimeter of triangle PRQ is:

PR + RQ + PQ = [tex]sqrt(61) + sqrt(41) + 10 ≈ 24.65[/tex] (rounded to two decimal places)

So, the perimeter of triangle PRQ is approximately 24.65 units.

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The nurse will give the patient one tablet of digoxin per day. Each tablet contains 187.5 mcg, so one tablet is the correct dose for the patient.

As per given information,

Patient's daily dose is 187.5 mcg.

Here we have to calculate the number of tablets the nurse will give the patient, use the following formula:

To get the number of tablets,

We have to divide the Patient's daily dose (mcg) by tablet dose (mcg).

Plugging in the numbers from the patient's prescription, we get:

Number of tablets = 187.5 mcg / 187.5 mcg

By simplifying these we get:

Number of tablets = 1

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Answer:

  13/32

Step-by-step explanation:

You want the area of the shaded portion of the unit square shown.

Points B, C, E are shown as equidistant from point F, so will lie on a circle centered at F. The center of that circle is at the point of coincidence of the perpendicular bisectors of BE, BC, and CE.

Without loss of generality, we can let line EF lie on the x-axis such that E is at the origin. Chord EB of the circle has a rise of 1/2 for a run of 1, so a slope of 1/2. Its midpoint is (1, 1/2)/2 = (1/2, 1/4). The perpendicular line through this point will have slope -2, so its equation can be written ...

  y -1/4 = -2(x -1/2)

  y = -2x +5/4

Then the x-intercept (point F) will have coordinates (0, 5/8):

  0 = -2x +5/4 . . . . . y=0 on the x-axis

  2x = 5/4

  x = 5/8

Trapezoid EFCD will have upper base 5/8, lower base 1, and height 1/2. Its area is ...

  A = 1/2(b1 +b2)h

  A = (1/2)(5/8 +1)(1/2) = (1/4)(13/8) = 13/32

The shaded area is 13/32.

__

Additional comment

The point-slope equation of a line through (h, k) with slope m is ...

  y -k = m(x -h)

The plane is approximately 44,197 feet away from the air traffic control tower.

An illustration of an angle of elevation

Between the horizontal line and the line of sight, an angle called the angle of elevation is created. When the line of sight is upward from the horizontal line, an angle of elevation is created.

Trigonometry can be used to resolve this issue. Let's illustrate:

    P (plane)

     /|

    / |

   /  |  h = altitude of plane = 5127 ft

  /   |

 / θ  |

T-----X

 d = ?

In the illustration, T stands for the air traffic control tower, P for the aircraft, for the angle of elevation, X for the location on the ground directly beneath the aircraft, and d for the desired distance.

We can see that the tower, the spot on the ground just beneath the plane, and the actual plane itself make up the right triangle TPX. The triangle's opposite and adjacent sides can be related to the angle by using the tangent function:

tan θ = h / d

where d is the desired distance and h is the plane's altitude.

To find d, we can rearrange this equation as follows:

d = h / tan θ

Inputting the values provided yields:

d = 5127 feet / 7° of tan

Calculating the answer, we obtain:

d ≈ 44,197 ft

Thus, the distance between the aircraft and the air traffic control tower is 44,197 feet.

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The missing value in the arithmetic sequence is 11.

What is Arithmetic Sequence?

An arithmetic sequence is a list of numbers with a definite pattern. If you take any number in the sequence then subtract it by the previous one, and the result is always the same or constant then it is an arithmetic sequence.

To find the missing value in the arithmetic sequence, we need to first determine the common difference between consecutive terms.

To do this, we can subtract any two consecutive terms, such as the second and first terms:

3.8 - 2 = 1.8

This tells us that the common difference is 1.8.

Now, we can use this common difference to find the missing value, which is the sixth term in the sequence. We can use the formula for the nth term of an arithmetic sequence:

a_n = a_1 + (n - 1)d

where a_n is the nth term, a_1 is the first term, n is the position of the term we want to find, and d is the common difference.

Using this formula with a_1 = 2, d = 1.8, and n = 6, we get:

a_6 = 2 + (6 - 1)1.8

a_6 = 2 + 5(1.8)

a_6 = 2 + 9

a_6 = 11

Therefore, the missing value in the arithmetic sequence is 11.

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Answer: y = 17x + 114

Step-by-step explanation:

The equation for the slope-intercept form is y = mx + b.

Arrange the equation so that it resembles y = mx + b.

You will do this by multiplying and subtracting so y is on the left side of the equation and mx + b is on the right side of the equation.

y + 5 = 17(x + 7)

y + 5 = 17x + 119

y + 5 - 5 = 17x + 119 - 5

y = 17x + 114

Answer:

Y = 17x + 114

Step-by-step explanation:

1. Y + 5 = 17 (x+7)

2. Y + 5 = 17x + 119   [Multiply the numbers in parenthesis by 17.]

3. Y = 17x + 114.     [To keep the balance and move the 5 over, subtract it from 119.]

The percentage of area under the density curve where x is less than 2 is 20%

A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%",

The area of the whole density curve is ;

A = 1/2 (a+b)h

This is because the curve takes the shape of a trapezium.

A = 1/2 ( 4+6) 0.2

A = 1/2 × 10 × 0.2

A = 5 × 0.2

A = 1

The area of the curve in region less than 2

= 1/2 bh

= 1/2 × 2 × 0.2

= 0.2

The percentage of the area less than 2 in the curve is

x/100 × 1 = 0.2

x = 0.2 × 100

x = 20%

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Answer: 540 cm²

Step-by-step explanation:To find the area of the dilated rectangle, we need to first find the dimensions of the new rectangle after it has been dilated by a factor of 3.

The length of the new rectangle will be 3 times the original length, which is:

10 cm x 3 = 30 cm

The width of the new rectangle will also be 3 times the original width, which is:

6 cm x 3 = 18 cm

Therefore, the area of the dilated rectangle will be:

30 cm x 18 cm = 540 cm²

The value of mean should be adjusted to 12 + 2.576σ so that 99% of the cans will contain 12 oz or more.

The process mean can be adjusted through calibration. The mean is a measure of central tendency in a dataset that represents the average value of a group of data. The population standard deviation is denoted by σ. The formula for the population mean is as follows: μ = (Σ xi) / n, where xi represents the data values and n represents the total number of data values.

Here we can use the formula of confidence interval as,μ±z σ/√n, Where μ is the mean, z is the z-score, σ is the standard deviation is the sample size. Given,The required confidence level is 99%. So,α = 1-0.99α = 0.01. We can find z from the z-score table at α/2 = 0.005 as, z = 2.576.

Now, we need to find out the value of μ when the mean will be 12 ounces so that 99% of cans will contain 12 ounces or more. So,μ ± z σ/√n = 12. We know that, P(X > 12) = 0.99. The formula for standardization is, Z = (X - μ) / σHere, X = 12, σ is given and we need to find the value of μ.z = (X - μ) / σ2.576 = (12 - μ) / σμ - 12 = 2.576 × σμ = 12 + 2.576 × σ.

Now, the value of μ should be adjusted to 12 + 2.576σ so that 99% of the cans will contain 12 oz or more.

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