Answer:
1809/27=67 is your answer........
The following probability distributions of job satisfaction scores for a sample of information systems (IS) senior executives and middle managers range from a low of 1 (very dissatisfied) to a high of 5 (very satisfied).
Probability
Job Satisfaction Score IS Senior Executives IS Middle Managers
1 0.05 0.04
2 0.09 0.10
3 0.03 0.12
4 0.44 0.45
5 0.39 0.29
1. What is the expected value of the job satisfaction score for senior executives (to 2 decimals)?
2. What is the expected value of the job satisfaction score for middle managers (to 2 decimals)?
3. Compute the variance of job satisfaction scores for executives and middle managers (to 2 decimals).
4. Compute the standard deviation of job satisfaction scores for both probability distributions (to 2 decimals).
5. What comparison can you make about the job satisfaction of senior executives and middle managers?
Answer:
1.)E₁ = 4,03
2) E₂ = 3,85
3) σ₁² = 1,23
4)σ₂² = 1,14
5)σ₁ = 1,11
6)σ₂ = 1,07
5 ) Distribution of senior executive and Middle Manager look pretty similar , diference in median 0,18 and difference in standard deviation 0,04
Step-by-step explanation:
1.-Expected value of the job satisfaction score for senior executive
E₁, variance σ₁ and standard deviation σ₁ and expected value of the job satisfaction score for Middle Manager E₂ variance σ₂ and standard deviation σ₂
E(X) = ∑ ( xi *f(xi)
JSS IS senior executive IS Middle Managers
1 0,05 0,04
2 0,09 0,1
3 0,03 0,12
4 0,44 0,45
5 0,39 0,29
∑ xi*f(xi) = 1*0,05 + 2 *0,09 + 3*0,03 + 4 * 0,44 + 5 * 0,39
E₁ = 0,05 + 0,18 + 0,09 + 1,76 + 1,95
1.)E₁ = 4,03
2.) ∑ xi*f(xi)
E₂ = 1* 0,04 + 2 * 0,1 + 3*0,12 + 4*0,45 +5*0,29
E₂ = 0,04 + 0,2 + 0,36 + 1,8 + 1,45
E₂ = 3,85
2 ) E₂ = 3,85
3) Variance of job satisfaction scores for senior executives.
x² f(x) x²* f(x)
1 0,05 0,05
4 0,09 0,36
9 0,03 0,27
16 0,44 7,04
25 0,39 9,75
σ₁² = [ ∑ x²*f(x) ] - μ² ∑ x²*f(x) = 17,47
In this case μ = E μ² = ( 4,03)² = 16,24
For senior executives: σ₁² = 17,47 - 16,24 = 1,23
σ₁² = 1,23
And standard deviation σ₁ = 1,11
For Middle managers
x² f(x) x²* f(x)
1 0,04 0,04
4 0,1 0,4
9 0,12 1,08
16 0,45 7,2
25 0,29 7,25
∑ x²*f(x) = 15,97
σ₂² = 15,97 - (3,85)² = 15,97 - 14,82
σ₂² = 1,14
σ₂ = √1,14 = 1,07
5 ) Distribution of senior executive and Middle Manager look pretty similar , diference in median 0,18 and difference in standard deviation 0,04
The function h(t) = - 16t2 + 48t + 160 can be used to model the height, in feet, of an object t
seconds after it is launched from the top of a building that is 160 feet tall.
Two other forms of the function are:
h(t) = -16(t - 5)(t+2)
h(t) = -16(t-1.5)2 +196
Which value of the function represents the maximum height of the object?
A h(0)
B. h(1.5)
C. h(2)
D. h(5)
Answer:
answer is c because you have to put in the 2 and get -16
PLEASE HELP ME WITH THESE!!!
9514 1404 393
Answer:
∠4 = 120°∠5 = 80°Step-by-step explanation:
Angle 5 is the third angle of the triangle whose other two angles are 45° and 55°. So, its measure is ...
∠5 = 180° -45° -55°
∠5 = 80°
__
This figure cannot be solved for angle 4 unless we assume the horizontal lines are parallel. Using the angle numbers as vertex designators, angle 245 and the one marked 45° are alternate interior angles, so are congruent. Angle 4 is vertical with the angle that is the sum of angle 245 and 75°, so we have ...
∠4 = 75° +45°
∠4 = 120°
A sporting goods factory produced 13,234 tennis balls per month.How many tennis balls does it produce during 12 months?
Answer:
158,808 !
Step-by-step explanation:
13,234 × m (months)
13,234 × 12
= 158,808
Pls need help!!!! Giving brainliest to the person that gives me the right awnser
Answer:
you only have the answer choices not the question itself
could you please attach the question so i can help?
( NO LINKS ) If x=7, is this equation true? 7 + 9x > 73 *
A. Yes
B. No
Answer:
[tex]\huge\mathfrak\red{Answer} \\ \\ 7 + 9x > 73 \\ \\ x = 7 \: \: \: \: \: \: given \\ \\ 7 + (9 \times 7) > 73 \\ \\ 7 + 63 > 73 \\ \\ 70 > 73 \\ \\ but \: 70 \: is \: not \: grater \: \: than73 \\ \\ so \: this \: equation \: is \: not \: true \\ \\ \huge\mathfrak\purple{Answer = no} \\ \\ \small\mathfrak\red{hope \: it \: helps...}[/tex]
Helpp!! Solve the system by graphing.
please explain step by step in full process
questions
Given L || M find the value of unknown angles in each of the following figures
Answer:
x=120°
y=70°
Step-by-step explanation:
solution,
y=70°(alternate angles)
x=120°(corresponding angles)
Can y’all help me on question 18?!
Answer:
B
Step-by-step explanation:
16 - 7 = 9
Answer:
m=7
Step-by-step explanation:
Determine which two numbers come next in the sequence 5,5,10,15,25, __, __
The two numbers that come next in the sequence 5,5,10,15,25, are 40 and 65.
How can the two numbers that come next in the sequence be calculated?To calculate this , You can figure it out by taking the first number, which is 5. However, since the previous number is 0, the sum is 5, and you proceed in the same manner.
5 + 5 = 10
(5 + 10) = 15
(10 + 15) = 25
(15 + 25) = 40
(25 + 40) = 65
Learn more about sequence at:
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Pat was shopping and found a jacket with the original price of $120 on sale for $9.99. What was the percent decrease in the cost?
Answer:
91.675% decrease
Step-by-step explanation:
There are 3 red chips and 5 white chips in a bag. If 2 chips are drawn, without replacement, what is the probability that both chips will be white?
Answer: 5/14
Step-by-step explanation:
5 white / 8 total
4 white / 7 total
5/8 * 4/7 = 20/56 = 5/14
What is the probability of picking a month at random that starts with the letter “J”
Answer:
A 1 in 4 chance or a probability of 0.25
Step-by-step explanation:
There is only 3 months that start with J and 12 months in a year so simplify 3/12 you get 1/4 or 0.25
An item costs $380 before tax and the sales tax is $15.20 find the sales tax rate write your answer as a percentage
Shana wants to buy a music player. She has $100 cash.
Can Shana afford an $89 unit plus HST? Yes or No?
Provide an estimate or a calculation to support your answer=
What is the original price of the most expensive item
Shana can buy for $100?
I need help with this
Answer:
p = 0.11 (rounded to 2 DP)
p = 0.111 (rounded to 3DP)
Step-by-step explanation:
p = 0.48³
p = 0.110592
Rounded to 2 DP
p = 0.11
Rounded to 3DP
p = 0.111
21. Find the volume of the water in the container in liters. (1 liter = 1000 cm3)
The volume of the water is
____ liters.
Answer:
volume of water in the container
30×10×8
2400cm³=2400ml=2.4liters
( since water is filled up to a height of 8 cm )
Solution :[tex] \large\boxed{ \mathrm{volume = l \times b \times h}} [/tex]
[tex]30 \times 10 \times 8[/tex][tex]\mathrm{2400 \: cm {}^{3} }[/tex]_____________________________
Since, 1000 cm³ = 1 litre
[tex]\mathrm{1 \: cm {}^{3} = \dfrac{1}{1000} }l[/tex][tex]\mathrm{2400 \: cm {}^{3} = \dfrac{1}{1000} \times 2400 } \: l[/tex][tex]\mathrm{2400 \: cm {}^{3} =2.4 \: \: litres} [/tex]_____________________________
[tex]\mathrm{ \#TeeNForeveR}[/tex]
If 10^x = 5, what is x?
Answer:
x=0.69897009
Step-by-step explanation:
expand by logarithms
10^x=5
=log(10^x)=log(5)
=x log(10)=log (5)
log base 10 of 10 is 1
x.l =log(5)
multiple bothside by 1
x=log(5)
x=0.6989709
1. What is the volume of this prism?
A.36
B.63
C.16
D.54
Answer:D
Step-by-step explanation:
Add 5+23. Enter your answer below as an improper fraction in lowest
12 10
terms, using the slash (7) as the fraction bar.
Answer: 163/60
Step-by-step explanation:
when adding fractions you have to get to a common denomenator and then add your fractions together
Find Y
Special right triangles
Please last question of the day!! Due very soon
Answer:
y= root 2 kilometers
Step-by-step explanation:
[tex] \frac{2 \sqrt{2} }{2} = \sqrt{2} [/tex]
Help me plz help me hep
Answer:
square root of 819 or 28.6
Step-by-step explanation:
Whoever answers the previous question after this gets 50 points and brainliest if correct.
Step-by-step explanation:
I said it I knew it I did it I submit for you so I'm the one that is if if you know me.
how fast are you going if you run 12 kilometers in 2 hours
Answer:
3.73 miles per hour
Step-by-step explanation:
12 Kilometers is 7.46 miles.
7.46/2 = 3.73 Miles per hour
help pls the question is in the picture
Answer:
[tex]\neq \neq \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \geq x^{2} x^{2} \sqrt{x} \frac{x}{y} x_{123} x_{123}[/tex]
Step-by-step explanation:
yeah
how to solve this question
Theorem 6.1A states that if a quadrilateral is a Parallelogram, then it’s opposite sides are
Answer:
congruent
Step-by-step explanation:
67. The line contains the point (4,0) and is parallel
to the line defined by 3x = 2y.
Answer:
[tex]y=\frac{3}{2} x-6[/tex]
Step-by-step explanation:
Hi there!
What we need to know:
Linear equations are typically organized in slope-intercept form:[tex]y=mx+b[/tex] where m is the slope of the line and b is the y-intercept (the value of y when the line crosses the y-axis)Parallel lines will always have the same slope but different y-intercepts.1) Determine the slope of the parallel line
Organize 3x = 2y into slope-intercept form. Why? So we can easily identify the slope, m.
[tex]3x = 2y[/tex]
Switch the sides
[tex]2y=3x[/tex]
Divide both sides by 2 to isolate y
[tex]\frac{2y}{2} = \frac{3}{2} x\\y=\frac{3}{2} x[/tex]
Now that this equation is in slope-intercept form, we can easily identify that [tex]\frac{3}{2}[/tex] is in the place of m. Therefore, because parallel lines have the same slope, the parallel line we're solving for now will also have the slope [tex]\frac{3}{2}[/tex] . Plug this into [tex]y=mx+b[/tex]:
[tex]y=\frac{3}{2} x+b[/tex]
2) Determine the y-intercept
[tex]y=\frac{3}{2} x+b[/tex]
Plug in the given point, (4,0)
[tex]0=\frac{3}{2} (4)+b\\0=6+b[/tex]
Subtract both sides by 6
[tex]0-6=6+b-6\\-6=b[/tex]
Therefore, -6 is the y-intercept of the line. Plug this into [tex]y=\frac{3}{2} x+b[/tex] as b:
[tex]y=\frac{3}{2} x-6[/tex]
I hope this helps!
A recreational area is formed by a rectangular shaped pool and a cement patio surrounding the pool. the pool has a length of 3x-3 meters and a width of 2x+7 meters. The patio extends x meters around to pool, on all sides of the pool. Write a polynomial expression that gives the total area of the recreational area.
The total area of the recreational area can be represented by the polynomial expression 26x² + 57x + 35.
What is the area of the rectangle?The area of a rectangle is defined as the product of the length and width.
The area of a rectangle = L × W
Where W is the width of the rectangle and L is the length of the rectangle
The area of the rectangular pool is given by its length times its width, so the area of the pool is (3x - 3) meters × (2x + 7) meters = (6x² + x - 21) square meters.
The area of the patio is given by the length of the pool plus twice the extension (x) on each side, times the width of the pool plus twice the extension on each side, so the area of the patio is (3x - 3 + 2x) meters × (2x + 7 + 2x) meters = (5x + 4) × (4x + 14) = 20x² + 56x + 56 square meters.
The total area of the recreational area is the sum of the areas of the pool and the patio, so it can be represented by the polynomial expression:
20x² + 56x + 56 + 6x² + x - 21 = 26x² + 57x + 35
Learn more about the Area of the rectangle here:
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Pls help fractions pls and sm else
Answer:
Step-by-step explanation:
(49/72)-(13/14)
-125/504