A researcher wishes to determine whether there is a difference in the average age of elementary school, high school, and community college teachers. Teachers are randomly selected. Their ages are recorded below. A suitable hypothesis test will be conducted to test the claim that there is no difference in the average age of each group. Find the test statistic. g

Answers

Answer 1

Answer:

F- test

Step-by-step explanation:

Testing the hypothesis about the equality of  k (k>2) population means

Test statistic F is used to find the whether there is no difference in the average age of each group.

Test statistic to be used

F= Between Mean Square/ Within Mean Square

F= s1²/s2²   where s1 and s2 are  independent unbiased estimates of the variance and their values do not differ greatly.

Which have  v1= k-1 and v2= n-k degrees  of freedom

The analysis of variance F -t est is always a one tailed test with rejection region located in the right tail of the F- distribution.


Related Questions

=
angle E and angle F are supplementary. If mangleF =
(9x - 38)° and mangleF = (2x + 42), find mangleF

=

Answers

Answer:

jhhffffffffffffffffffffhfbrsjjssssssssssss

Step-by-step explanation:

if i sell 329 ham sandwiches this week how many ham sandwiches did i sell each day this week.

Answers

Answer:

you would have sold 47 ham sandwiches each day of the weed

Answer:

Your answer would be 47 ham sandwiches.

Step-by-step explanation:

It is very simple you would just do 329/7=47

I need help I never got taught how to do this

Answers

Answer:

736cm²

Step-by-step explanation:

The surface area of a regular pyramid is equal to:

area of the square base + 1/2ps

where p is the perimeter of the base and

s is the height of the slant line of the pyramid.

In your drawing s = 15cm and the base has four equal lengths of 16cm

So first find the area of the base.  Since this is a square, the area is just the

length x the width or 16cm x 16cm = 256cm²

(p) is the perimeter of the base.  Find this by adding all four side of the bottom square together which is 16cm + 16cm + 16cm + 16cm  or  4 x 16cm which is 64cm.

You already were given (s) which is the height of the slanted side from the base to the pointed top.  The drawing gives you this as 15cm.

So plugging all this into the formula, you get:

Surface Area = Area of Base + 1/2 p s

                      =  256 cm² + [1/2 ( 64cm )(15cm)]

                      =  256 cm²  +  {1/2 ( 960 cm²)]

                      =  256 cm²  +  480 cm²

                      =  736 cm²

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Which function has an inverse that is a function?
Ob(x) = x2 + 3
Od(x) = -9
Om(x) = -7x
O p(x) = 1x1
Which function has an inverse that is a function?

Answers

Step-by-step explanation:

an equation is a function, if it delivers for every possible input value x exactly one result value y.

b(x) = y = x² + 3

y - 3 = x²

x = sqrt(y -3)

our formally correct

y = sqrt(x - 3)

that is actually NOT a function, as a square root delivers for most x values 2 y values : a positive and a negative value.

d(x) = -9

that means for every possible value of x the result is -9.

reversing this means that the input value of -9 has infinitely many possible results

that is NOT a function.

m(x) = y = -7x

x = -y/7

or formally correct

y = -x/7

that is a normal function. every possible value of x leads to exactly one value of y.

p(x) = y = 1x¹ = x

y = x is its own inverse function.

and this is, of course, a function. every possible value of x leads to exactly one value of y.

please help me asap and show your work

Answers

Answer:

A) = 5

B) = 3

C) = [tex]2\sqrt{3}[/tex]

D) = 2.2894

Step-by-step explanation:

A)  [tex]x^2=25[/tex]

[tex]\sqrt{x^2} = \sqrt{25} \\x= 5[/tex]

5*5 = 25

B)  [tex]x^3 = 27[/tex]

[tex]\sqrt[3]{x^3} = \sqrt[3]{27} \\x=3[/tex]

3*3*3 = 27

C)  [tex]x^2 = 12\\[/tex]

[tex]\sqrt{x^2} = \sqrt{12} \\x=2\sqrt{3} \\[/tex]

[tex]2\sqrt{3}[/tex] * [tex]2\sqrt{3}[/tex] = 12

D)  [tex]x^3 = 12[/tex]

[tex]\sqrt[3]{x^3} = \sqrt[3]{12} \\x=2.2894.....\\[/tex]

2.2894 * 2.2894 *2.2894 = 12

No exact solution

Evaluate.

0.2^3÷0.4⋅60+3.6÷1.2
Enter your answer as a decimal

Answers

Answer:

what that's grade? ha

that's first year college

Find the area and perimeter.
5.6 cm

please help!!!!

Answers

Answer:

31.36cm; 22.4cm

Step-by-step explanation:

hope this helps

Answer:

31.36 cm^2,     22.4 cm

Step-by-step explanation:

Area of the square is a^2 = (5.6)^2

= 31.36 cm^2

Perimeter of a Square = 4s

= 4(5.6)

=22.4 cm

Simplify 5a×3×2b

Write down the answer, please.

Answers

Solution:

[tex]5a \times 3 \times 2b \\ = (5 \times 3 \times 2)ab \\ = 30ab[/tex]

Answer:

30 ab

Hope it helps

ray4918 here to help

Answer:

30ab

Step-by-step explanation:

Given expression,

→ 5a × 3 × 2b

Simplifying the expression,

→ 5a × 3 × 2b

→ (5 × 3)a × 2b

→ 15a × 2b

→ (15 × 2)ab

→ 30ab

Hence, the answer is 30ab.

Solve for z:

32=12+4(z-1)

Answers

Answer:

6

Step-by-step explanation:

32 = 12 + 4 ( z - 1 )

32 - 12 = 4 ( z - 1 )

20 = 4 ( z - 1 )

20 / 4 = z - 1

5 = z - 1

z - 1 = 5

z = 5 + 1

z = 6

how long does a pregnancy last will give 100 points I'm in test
a 1day
b 1mounth
c 2weeks
d 1year

Answers

Answer: D is the answer

Step-by-step explanation:

And why are you asking this question? Are you a girl?

A line that includes the points ( – 8,9) and ( – 10,d) has a slope of 6. What is the value of d?

Answers

Answer:

The value of d is -3.

Step-by-step explanation:

We are given that a line that includes the two points (-8, 9) and (-10, d) have a slope of 6. We want to determine the value of d.

Recall that the formula for slope is:

[tex]\displaystyle m = \frac{\Delta y}{\Delta x}[/tex]

We know that the slope is 6. Substitute:

[tex]\displaystyle (6) = \frac{(d) - (9) }{(-10) - (-8)}[/tex]

Solve for d:

[tex]\displaystyle \begin{aligned} 6 & = \frac{d - 9}{-10 + 8} \\ \\ 6 & = \frac{d - 9}{-2} \\ \\ -12 & = d - 9 \\ \\ d & = -3 \end{aligned}[/tex]

In conclusion, the value of d is -3.

What is the slope from a graph:​

Answers

Rise/run = slope

hope this helps :)

One yard company charges $10x + $50 a month to mow and edge a lawn. A second company charges $8x + $60 a month to mow and edge a lawn. Each lawn company also offers additional services for an extra fee.

Let x represent the number of additional services.

Mr. Mead is comparing the two companies. How many additional services are needed for the two companies to be the same price?

I’m too lazy to do it

Answers

Answer: x=5

Step-by-step explanation:

1+1 ASAP PLEASE. Marking Brainliest.

Answers

Answer:

2...

Step-by-step explanation:

1 + 1 = 2

Answer: It’s 2 lol

Explanation: 1 + 1 = 2

Ken used 3/4 of his wrapping paper. If he used 12 feet how much wrapping paper did he use

Answers

Answer: If Ken used 12 feet of wrapping paper, 3/4 then he would have had 16 ft of wrapping paper before he started wrapping

Step-by-step explanation:

12 divided by 3 is 4 giving us the equation 4/4 equals 4 x 4

The perimeter of a rectangle is 84cm.
Its shortest side has a length of 3cm.
State the length of the longest side.

Answers

Answer:

39 cm

Step-by-step explanation:

The perimeter of a rectangle is given as 2 (w + l) or 2w + 2l, where w and l are the sides.

Let us use w as 3 cm.

The perimeter of the rectangle is 2(3) + 2l = 6 + 2l

6 + 2l = 84 cm

We move the 6 to the left hand side and it goes from positive to negative.

2l = 84 - 6cm

2l = 78 cm

Divide both sides by 2.

l = 39 cm

There you have the answer for side l.

Hope this helps.

Simplify 10/16 to lowest terms and find and equivalent fraction that has a denominator of 32

Answers

The lowest fraction for 10/16 is 5/8
and for the equivalent fraction with a denominator for 32 is 20/32

The lowest terms of fraction are, 5/8

And, The equivalent fraction that has a denominator of 32 is,

⇒ 20 / 32

We have to given that,

To simplify fraction 10/16 to lowest terms and equivalent fraction that has a denominator of 32.

We have,

⇒ 10 / 16

⇒ 10 ÷ 2 / 16 ÷ 2

⇒ 5 / 8

Therefore, The lowest terms of fraction are, 5/8

And, Let the numerator of the fraction with denominator 32 is, x

Hence, It can be written as,

⇒ x / 32

Equivalent to 10/16,

⇒ 10/16 = x/32

⇒ 32 x 10 = 16x

⇒ 320 = 16x

⇒ x = 20

Therefore, The equivalent fraction that has a denominator of 32 is,

⇒ 20 / 32

Learn more about the fraction visit:

https://brainly.com/question/5454147

#SPJ6

help 50 points for the awnser

Answers

[tex]8 \geqslant h[/tex]

Swap the sides of the inequality and flip the inequality sign

[tex]h \leqslant 8[/tex]

Alternate form:h∈《-∞,8]

Hence, Option A, B, D is correct..

Given inequality ,

[tex]\sf\longrightarrow 8 \geq h[/tex]

This implies h is less than or equal to 8 . Hence it cam sustain all the values 8 , 7 , 6 , 5 , .....

On looking at options given ,

[tex]\sf\longrightarrow h = 8 \\ [/tex]

[tex]\sf\longrightarrow h = 5 \\ [/tex]

[tex]\sf\longrightarrow h = 6 [/tex]

Help!! ASAP

Is relation below a function? If it is a function, state its domain.

{(0,3),(2,-3),(1,8),(2,3)}

A. The relation is not a function.
B. The relation is a function. The domain is {0,1,2}.
C. The relation is a function. The domain is {-3,3,8}
D. The relation is a function. The domain is {-3,0,1,2,3,8}

Answers

Answer:

A. The relation is not a function.

Step-by-step explanation:

Since 2 --> -3, and 2 --> 3, the relation is not a function.


please someone answer with an explanation if possible!

Answers

Answer:

download gauth math and scan it and will give u the answer

Answer:

C

Step-by-step explanation:

The y intercept is where the line first crosses the y axis, so it would be positive 2. The slope is negative because it's diagonally going the left way, and its 3 because from one point to another it's 3 down and 1. The formula for a slope is rise/run, in this case it would be 3/1 which is 3.

Cecilia owns just as many cats as she does birds. If her pets have a total of 18 legs, how many cats does she own?

Answers

Answer:

1

Step-by-step explanation:

You can get this answer by adding 4+4+4+4, equaling out to 16...but how is there 18? well you just add 2 for the bird's legs and that's your answer!!

Hope this helps you love!!!

Answer:

3

Step-by-step explanation:

3 cats with 4 legs = 12

3 birds with 2 legs =6

12 + 6=18

PLEASE HELP!! Only answer if correct.

Answers

Answer:

top -55

bottom 325

Step-by-step explanation:


Please help me I need to pass

Answers

It looks to be D full text full text

5/7×0.25 equals 5/7÷ What to make the equation right?

Answers

4

Step-by-step explanation:

5/7 × 0.25 = 5/7 ÷ a

25/100 = 1/a

25a = 100

a = 100/25

a = 4

whats the greateats hundreds you can multiply by 6 to get close to but not go over 3236

Answers

Answer:

100

Step-by-step explanation:

6×100=600

600 might not be that much close to 3236 but it's not over 3236

What is the image point of (9, -1) after the transformation T-4,-3 0 R270°?

Answers

Answer:

Given A point (9,-1) is first translated by rule T-4,3 : ( x,y ) goes ( x - 4 , y+ 3) followed by rotation of 270°

rule of rotation of 270° : ( x , y ) goes ( y,-x )

image of ( 9 , -1) after translation :

( 9 - 1) goes (-9,-1+3)=(-9,2)

then , image after rotation of 270° :

( -9,2 ) goes (2,9 p

hence , the image point of ( 9,-1 ) (9,-1)

after the transformation T-4,3 and rotation of 270°i is ( 2,9 ).

Step-by-step explanation:

hope it helps

Evaluate a1 (r)^n-1 for a1 = 2, r= 3, and n = 4.
A. 216
B. 18
C. 32
D. 54

Answers

Option D

[tex]a1(r) {}^{n - 1} [/tex]Putting values:

[tex]2(3) {}^{4 - 1} [/tex][tex]2(3) {}^{3} [/tex][tex]2 \times 27[/tex][tex] = 54[/tex]Hence, Proved.

Answer:

[tex]54[/tex]

Answer D is correct

Step-by-step explanation:

[tex]a_1 \: {r}^{n - 1} \\ 2 \times {3}^{4 - 1} \\ 2 \times {3}^{3} \\ 2 \times 3 \times 3 \times 3 \\ 2 \times 9 \times 3 \\ 2 \times 27 \\ = 54[/tex]

Hope this helps you.

Let me know if you have any other questions :-)

30/40 in simple form

Answers

Answer:

The simplest form is 3/4

Step-by-step explanation:

Cancel the common factor of 30 and 40

Write the Fraction in Simplest Form Of 30/40

HELP PLZ !

Plot the numbers 3.07 , 2.92 and 3.02 on the number line

Answers

U plot them the way they are

Arjun paid $21.60 for a box that contained 12 packs of baseball cards. At this rate, how much is one pack of baseball cards?

Answers

Answer:

$1.80

Step-by-step explanation:

You need to divide the amount he paid for the 12 packs by 12 and you get 1.80

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