The national mean annual salary for a school administrator is $90,000 a year. A school official took a sample of 25 school administrators in the state of Ohio to learn about salaries in that state to see if they differed from the national average.

Answers

Answer 1

Missing part of question

Formulate hypotheses that can be used to determine whether the population mean annual administrator salary in Ohio differs from the national mean of $90,000.

Answer:

[tex]H_0:\mu = 90000[/tex]

[tex]H_a: \mu \ne 90000[/tex]

Step-by-step explanation:

Given

[tex]n = 25[/tex] -- sample size

[tex]\mu = 90000[/tex] --- mean

Required

Formulate a hypothesis

First, the mean annual salary is: $90,000

This represents the null hypothesis

So:

[tex]H_0:\mu = 90000[/tex]

To determine if the mean differs implies that

[tex]\mu \ne 90000[/tex]

This represents the alternate hypothesis

So:

[tex]H_a: \mu \ne 90000[/tex]

So, the null and alternate hypotheses are:

[tex]H_0:\mu = 90000[/tex]

[tex]H_a: \mu \ne 90000[/tex]


Related Questions

An arithmetic sequence is represented by the explicit formula A(n) = 2 +(n − 1)(− 5)
What is the recursive formula?

Answers

Answer:

a+(n-1)d please do you get it or

Answer:

[tex]a_{n}[/tex] = [tex]a_{n-1}[/tex] - 5

Step-by-step explanation:

Given the explicit formula

A(n) = 2 - 5(n - 1)

Compare with the standard form

A(n) = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 2 and d = - 5

A recursive formula allows a term in the sequence to be found by adding d to the previous term.

Then recursive formula is

[tex]a_{n}[/tex] = [tex]a_{n-1}[/tex] - 5 , with a₁ = 2

parallel lines intersect in two points true or false

Answers

parallel lines will never touch that’s false they go like this | |

Answer:

it's false.

Parallel lines don't intersect in two points

What is the surface area

Answers

Answer:

170ft

Step-by-step explanation:

A=2(wl+hl+hw) is the equation

Answer:

SA=170

Step-by-step explanation:

5*5=25, *2=50

5*6=30, *2=60, *2=120

I need help find this in slope intercept form

Answers

Answer:

y=2x+24 is you're answer

Answer:

I'm pretty sure it's y=2x+24

Step-by-step explanation:

The slope intercept formula is y=mx+b. So to get the equation into that form you would have to get y by itslef, which  means you would have to subtract 8x from both side. And then you can't have a number in front of the y so you have to divide by that for all of the terms.This then gives you your answer.      

2x+20 3x-15 solve for x=?

Answers

Answer:

X = 35

Step-by-step explanation:

Since the line is crossing two parallel lines the measurements are equal then you solve for X.

2X + 20 = 3X - 15

-2X           -2X

20 = X - 15

+15      +15

35 = X

Answer:

x=35

Step-by-step explanation:

The expressions are corresponding angles which are congruent.

Set the two equations equal to each other.

2x+20=3x-15

Add and subtract like terms

35=1x

Divide:

35/1=35

X=35

Hope this helps! :)

Correct me if I'm wrong!

GUYS!! I KNOW IM SUPER ANNOYING BUT I NEED MORE HELP!!! PWEASEE!!!

Answers

Answer:

The answer should be a letter which is t.

Step-by-step explanation:

1) Simplify 2/3t to 2t/3.

[tex] \frac{2t}{3} \times 1 \frac{1}{2} [/tex]

2) Convert 1 1/2 to improper fraction. Use this rule: a b/c = ac+b/c.

[tex] \frac{2t}{3} \times \frac{1 \times 2 + 1}{2} [/tex]

3) Simplify 1 × 2 to 2.

[tex] \frac{2t}{3} \times \frac{2 + 1}{2} [/tex]

4) Simplify 2 + 1 to 3.

[tex] \frac{2t}{3} \times \frac{3}{2} [/tex]

5) Cancle 3.

[tex]2t \times \frac{1}{2} [/tex]

6) Cancle 2.

[tex]t[/tex]

Therefor, the answer for this equation is a letter which is t.

Answer:

your answer would be t

Step-by-step explanation:

One angle of an isosceles triangle measures 40°. Which other angles could be in that isosceles triangle?

Answers

Answer:

100° and 70°

Step-by-step explanation:

100°, 40°, and 40°

and

40°, 70°, and 70°

Answer:

100° and 70°

Step-by-step explanation:

100°, 40°, and 40°and40°, 70°, and 70°

Number 8 plssssssssss

Answers

Answer:

It created a single African nation with many states.

8*1,000,000+8*1/1,000,000

Answers

Answer:

1000000000001 /125000

1000000000001 over 125000

Step-by-step explanation:

be more specific when you post questions..

Hector made a scale drawing of the front of a
building.
• The front of the actual building is in the
shape of a rectangle with a height of
21 feet and a width of 15 feet.
• The height of the building in Hector's
drawing is 3.5 inches, and the width is
2.5 inches.
What scale factor did Hector use in his scale
drawing?
A. 1 inch : 2 feet
B. 1 inch : 4.3 feet
C.1 inch : 6 feet
D. 1 inch : 8.4 feet

Answers

Option B is correct. I did the test and it shows 100% I hope it helped!

how do u convert -95 3/4 as a decimal ?

Answers

Answer:

Simply -95.75

Step-by-step explanation:

3/4 or 3 ÷ 4= 0.75

-95 + -0.75 = -95.75

Which expression is equivalent to
x2 - 8x + 13 = 0

Answers

Answer:

for 7 i believe its D

Step-by-step explanation:

Can you help me with my work don’t send no link

Answers

b and d r correct yuh yuh

Answer:

A and C!

Step-by-step explanation:

a: for a just move all the terms not containing x to the right side of the equation!

c: divide each term by 4 and simplify!

-

hope this helped <3

7
A bookstore is selling books for $10 each. Which graph shows the relationship between the number of books, 2, the store sold and the total amount of money, y.
paid from the book sales?
BOOK SALES
Total Amount Paid
(dollars)
0 1 2 3 4 5
Number of Books
Sold
BOOK SALES
50
Total Amount Paid
(siepop)
20
10
0 1 2 3 4 5
Number of Books

Answers

Answer:

can you put it for clear in a sentice

Step-by-step explanation:

Write the following quadratic expression in standard form: ( 2 x − 1 ) ( 3 x − 1 )

Answers

Answer:

6[tex]x^{2}[/tex] - 5[tex]x[/tex] + 1

Step-by-step explanation:

Standard form is: [tex]ax^{2} +bx+x[/tex]

To reach that you have to distribute:

(2x - 1) (3x - 1)

2x (3x - 1) = 6[tex]x^{2}[/tex] - 2[tex]x[/tex]

-1 (3x - 1) = -3[tex]x[/tex] + 1

Combine like terms:

6[tex]x^{2}[/tex] - 5[tex]x[/tex] + 1

Please help my test is tomorrow thank you god bless you all

Answers

Answer:

"(2x - 1) (x - 7)." i think

Step-by-step explanation:

1. In the expression 57, the 7 is the
a. base
b. root
c. multiple
d. exponent

If u can give me all the answers that would be amazing pls

Answers

Answer: exponent

Step-by-step explanation:

because 5 is bigger and bolder

If $480 is shared in the ratio 4:3:5, the difference between the largest and the smallest share is

Answers

Answer:

80

Step-by-step explanation:

........

..

the answer is 80

Starbucks sells 26 drinks every 2 hours. How many drinks would they sell in 12 hours?

Answers

Answer:

156 Drinks

Step-by-step explanation:

Answer:

No. of drinks sell by them in an hour=26/2=13

So,No. of drinks sell by them in 12 hours=

[tex]12 \times 13 = 156[/tex]

Hence, They sell 156 drinks in 12 Hours and 312 drinks in a day.

Gotta love these Starbucks lover, they'll tell you I'm insane

The Stone's are driving to a family reunion that is 320.6 miles away. They
stop at a gas station and the map says they have 189.75 miles of the trip
remaining. How many miles have the Stone's driven so far?
DUE TODAY!

Answers

Answer:

Step-by-step explanation:

Formula

Driven = Total - what they need to go

Driven = 320.6 - 189.75

Driven = 130.85

Mr. Turner has two Math 2 classes, with one class, he lectured, and the students took notes.
In the other class, the students worked in small groups to solve math problems. After the first
test, Mr. Turner recorded the student grades to determine if his different styles of teaching
might have impacted student learning,
Class 1: 80, 81, 75, 70, 72, 74, 76, 77, 77, 79, 84, 88, 90, 80, 78
Class 2: 70, 90, 88, 89, 86, 86, 82, 77, 79, 84, 84, 86, 87, 88, 88

Answers

It 24-555 bc it been there while it one and the 25 it u


Help 10 pts!!
For a project on Egypt, Nick is building a paper model of a square based pyramid. The square base measures 8 inches by 8 inches.
The height is 9.2 inches. If Nick carves a piece of foam to place inside the pyramid for support, which measurement BEST describes
the amount of foam used? (round to nearest whole number)
A)
196 in?
B)
224 in?
C)
196 in?
D)
224 in?

Answers

Answer:

C. 196 in3

No explanation needed


Find the area of each triangle . Units are not to scale .

Answers

Answer:

area of triangle = 1/2 x b x h

Step-by-step explanation:

16 x 12 = 192

192/2= 96

do the same for all

Answer:

pictures are in order of the questions

Step-by-step explanation:

4. The population of a small town is given by the function p=35t +1450, where t is the number
of years since 2015. What would the town's population be in 2020?

(1) 1,485
(3) 1,625
(2) 1,570
(4) 1,700

Answers

Answer:

1625

Step-by-step explanation:

[tex]35(5) + 1450 = 1625[/tex]

35 x 5 = 175

175 + 1450 = 1625

Jenny has $300. She found a bank with an interest rate of 3.8% compounded monthly. How much interest would she earn in one year? (Round to the nearest cent-- 2 decimal places)

Answers

Answer:

311.60

Step-by-step explanation:

Wallace walked 9/10 of a mile for 7 days last week. How many miles did he walk?

Answers

Answer:

6.3 miles

Step-by-step explanation:

9/10 x 7 = 63/10 = 6.3 miles

Hope that helps!

-Sabrina

For f(x) = 3x + 2, find f(3)

Answers

sub x = 3

f(3) = 3( 3 ) + 2

=9 + 2

=11

Answer:

f(3) = 11

Step-by-step explanation:

To evaluate f(3) substitute x = 3 into f(x) , that is

f(3) = 3(3) + 2 = 9 + 2 = 11

Can someone explain this to me? I was absent today and my teacher isn’t helping.

Answers

9514 1404 393

Answer:

  1. adjacent: ACB, BCD and BCD, DCE. vertical: ACB, DCE and BCD, ECA

  2. adjacent: KGJ, JGI and HGM, MGK. vertical: JGI, MGL and HGM, KGJ

  3. adjacent. x = 49°

  4. adjacent. x = 71°

Step-by-step explanation:

As I noted in the attachment, vertical angles are formed from opposite rays (lines that cross). They share only a vertex. Each of the crossing lines makes up one side of each of the vertical angles. (You can think of each line as being made of opposite rays from the vertex of the angle.)

Adjacent angles share both a vertex and one side. (They do not overlap.) For example, in Figure 2, angles KGM and LGM are not adjacent, even though they share verex G and side GM. This is because they overlap. In that figure, angles KGL and LGM are adjacent angles.

__

1. To identify adjacent angles, choose a ray and make note of the angles on either side of it.

  adjacent: {ACE, ACB}, or {BCA, BCD}, or {DCB, DCE}, or {ECD, ECA}

To identify vertical angles, choose two crossing lines and one of the 4 spaces between them. The other vertical angle will be non-adjacent, in the opposite space of the same size.

  vertical: {ACB, ECD}, or {ACE, BCD}

__

2. adjacent: any of the pairs {KGJ, JGI}, {JGI, IGH}, {IGH, HGM}, {HGM, MGL}, {MGL, LGK}, {LGK, KGJ}.

Note that these are the nearest, smallest pairs of adjacent angles. This is usually what we are talking about when we refer to adjacent angles. We could add to the list pairs like {IGH, IGK}, {IGM, IGL}.

 vertical: (lines IL, HK) {IGH, LGK} or {IGK, LGH}; (lines IL, MJ) {IGM, LGJ} or {IGJ, MGL}; (lines HK, MJ) {HGM, KGJ} or {HGJ, KGM}

__

3. The angles share a ray, so are adjacent. Together, they make up a right angle, so they are complementary.

  x = 90° -41°

  x = 49°

__

4. The angle share a ray, so are adjacent. Together, they make up a linear angle, so are supplementary.

  x = 180° -109°

  x = 71°

Powers of products and quotients (integer exponents)

Answers

Answer:

C

Step-by-step explanation:

A line has a slope of O and passes through the point (-8, 10). What is its equation in
slope-intercept form?

Answers

Answer:

Slope-intercept form: y = 10 Point-slope form: y − 10 = 0 ⋅ ( x + 8 )

Step-by-step explanation:

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