Choose the appropriate test for the following situation. A company has instituted a new work policy that it hopes will reduce the number of sick days used per year by its employees. You wish to test whether the mean number of sick days used by employees this year differs from the mean number of sick days used last year by all employees (which was 8.2).
a. Two-sample t-test
b. One-sample t-test
c. Two-sample prop z-test
d. Dependent sample t-test

Answers

Answer 1

Answer:

i think it is a

Step-by-step explanation:


Related Questions

Thomas is saving money for a new mountain bike. The amount (a) Thomas needs to save is more than $50.45. Which inequality models the amount Thomas needs to save?
a > 550.45
<550.45
O $60.45 ca
50 45 = a

Answers

Answer:

its c

Step-by-step explanation:

This is because the amount is more than what he needs to save, considering that he is probably has some money in his bank already.

Helpp me pleaseee I need it?

Answers

Answer:

112 ft.

Step-by-step explanation:

This shape is a trapezoid. To find the area of a trapezoid, use the formula: [tex]\frac{b_{1} + b_{2} }{2} h[/tex]. First find base one. The shape in the middle is a square, so the top side of the trapezoid will be worth 8 ft as well. Now add the two bases 8 + 20 to get 28 and then divide by 2 to get 14. Now multiply 14 by the height (8). 14 x 8 is 112 ft.

Hope it helps and is correct!

help, i need you to find the area

Answers

Answer:

98

Step-by-step explanation:

Formula Base * Height

7*14=98

Answer:

77 inches

Step-by-step explanation:

The formula for area of a trapezoid is [tex]\frac{b_{1} + b_{2}}{2} h[/tex]. In this case, first add base 1 (8) + base 2 (14) to get 22. Now divide 22/2 to get 11. Now multiply 11 by the height (7), to get 77 in.

Hope it helps!

7 + 79x79x= − 42 Solve this within 5 minutes !

Answers

42 rhhrhjejrjfitkkrjrjrhrt

Evaluate 2^x for (a) x = - 2 and (b) x = 3 3. Write your answers in simplest form

Answers

Answer:

a) 1/4

b) 8

Step-by-step explanation:

a) a negative exponent becomes positive if you take the reciprocal fraction

1 /2² = 1/4  when x = -2

b) x = 3

2³ = 2 x 2 x 2 = 8

The value of the expression as; a) 1/4 and b) 8

What is an expression?

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

We are given that [tex]2^x[/tex] for (a) x = - 2 and (b) x = 3

a) Since negative exponent becomes positive if we take the reciprocal fraction

1 /2² = 1/4  

when x = -2

b) x = 3

2³ = 2 x 2 x 2 = 8

To know more about an expression follow;

brainly.com/question/19876186

#SPJ2

Diane sells candles online and ships them to her customers. Each candle weighs 1.5 pounds. When a customer orders more than one candle, Diane ships all of the customer's candles in one box. She weighs the box to determine shipping cost. This table shows the weight per shipment. Choose ALL amounts that could be added to this table. A) 4.5 B) 5 C) 6 D) 6.5 E) 7​

Answers

Answer:4.5 and 6 should be on there

Step-by-step explanation: multiply 1.5 by the number of candles to get the answer

Katie works a
2 hours lunch shift. She earns $4 in tips. She earns a total of $32, including
her tips. How much does she get paid per hour? h = Katie's hourly pay

Choose the equation that matches this real word problem

1) 2h+4=32
2) 2h+32=4
3) 4h+2=32
4) 32h+2=4

Answers

Answer:

2. or 3 one ejei2iieieieo2ow9w

Answer:

1

Step-by-step explanation:

cause she works 2 hours then her hour pay plus the $4 tip and you get 32

Mary bought a 2 pound bag of dog food. Her dog ate 3/6 pound on Monday and 2/6 pound on Tuesday. How many pounds of dog food remain in the bag? (work it out)

Answers

Answer:

1-1/6

Step-by-step explanation:

3/6+2/6=5/6

This is out of one pound

So there is 7/6 pounds left

Or 1-1/6

In a landscape plan, a rectangular flower bed is designed to be 4 meters longer than it is wide. If 60 square meters are needed for the plants in the bed, what should the dimensions of the rectangular bed be?

Write the equation and your solution.

Answers

Answer:

i dk and stop callin me slime

Step-by-step explanation:

Dimension of rectangular bed is

length = 10 meters and width = 6 meters

Equation is [tex]w^2+4w-60=0[/tex]

Given :

a rectangular flower bed is designed to be 4 meters longer than it is wide

60 square meters are needed for the plants in the bed.

Let 'w' be the width of the flower bed

and 'L' be the length of the flower bed

Length is 4 meters longer than its width

Length L= w+4

We know that the area of rectangle = length times width

[tex]Area = L \cdot W\\A=(w+4)(w)\\A=w^2+4w[/tex]

Given that the area is 60 square meters

Replace A by 60  and solve for 'w'

[tex]60=w^2+4w\\w^2+4w-60=0\\(w+10)(w-6)=0\\w+10=0, w=-10\\w-6=0, w=6[/tex]

Width cannot be negative, so width = 6 meters

length = width +4 = 6+4=10 meters

Dimension of rectangular bed is

length = 10 meters and width = 6 meters

Learn more: brainly.com/question/19579804

Lola has a total of 45 beads. Some are black and some are white. The ratio of the number of black beads to the number of white beads is 7:2. How many more black beads little white beads are there?​

Answers

Answer:

The answer is 35:10

Step-by-step explanation:

Answer:

25

Step-by-step explanation:

Add the parts of the ratio to get the whole (7 + 2). Divide the total number of beads and the sum of the ratio to find out how many times you'll multiply (45 ÷ 9). Use the ratio to multiply by 5 (5 • 7) and (5 • 2).

There are 35 black beads and 10 white beads.

So, there are 25 more black beads than white beads.

Which fraction has a terminating decimal?
- 11/19
- 4/7
- 1/3
- 3/150

Answers

Answer: D) 3/150

==========================================================

Explanation:

With the use of a calculator, we see that,

11/19 = 0.57894736842106...., the decimals eventually repeat; but unfortunately my calculator ran out of room to show the repeating portion4/7 = 0.5714285714285714..., the block "571428" repeats forever1/3 = 0.333333.... the 3s go on forever3/150 = 0.02

So 3/150 converts to the terminating decimal 0.02

The word "terminate" means "stop". In the other decimal values, the decimal digits go on forever repeating the patterns mentioned.

----------------------

A non-calculator approach will have us simplify 3/150 into 1/50 after dividing both parts by the GCF 3. Then notice how 50 has the prime factorization of 2*5*5. The fact that the denominator 50 can be factored in terms of only 2's and 5's is enough evidence to conclude that the fraction converts to a terminating decimal.

If the denominator factors into some other primes, other than 2s and 5s, then we don't have a terminating decimal. So that's why 11/19, 4/7 and 1/3 convert to non-terminating decimals.

(GIVING BRAINLIYEST)

im in 6th grade so please write it simple

8. what is the volume of these 5 objects

Answers

Answer:

1,a. 224in

b. 240in

2,144ft

3,it is kind of hard I well try it on common if I can

Your friend needs your help. His parents have told him that it is time for him to start paying for his own cell phone. After completing some research on the internet, you have narrowed down his options. Option 1 charges $0.30 for each cell phone call and $25 for unlimited text messaging. Option 2 charges a flat rate of $40.

Which plan is the best option?​

Answers

Answer:

For less than 50 calls, option 1 is the best, while for more than 50 calls, option 2 is the best.

Step-by-step explanation:

Option 1:

For n calls, the cost is given by:

[tex]C_{1}(n) = 25 + 0.3n[/tex]

Option 2:

The cost is flat of 40, so [tex]C_{2}(n) = 40[/tex]

Which plan is the best option?​

Depends on the number of calls, as for a high number, [tex]C_1[/tex] will be higher than [tex]C_2[/tex]. We have to find this number. So

[tex]C_{1}(n) > C_{2}(n)[/tex]

[tex]25 + 0.3n > 40[/tex]

[tex]0.3n > 15[/tex]

[tex]n > \frac{15}{0.3}[/tex]

[tex]n > 50[/tex]

This means that for less than 50 calls, option 1 is the best, while for more than 50 calls, option 2 is the best.

HELPPSKEJSSJS THANKSSSS

Answers

Answer:

-7

Step-by-step explanation:

daniela uses 1/5 cups of choclate chip for every 1/7 batch of cookies he makes. How many cups of choclate chips does he use in 1 batch of cookies?

Answers

Answer:

1 2/5 cups

Step-by-step explanation:

1/5 ÷1/7

1/5×7

7/5

1 2/5 cups

Diane is starting a business selling handmade necklaces. She has decided to invest an initial
amount of $203 for advertising, and materials cost $2 for each necklace she makes. Diane
can sell her creations for $31 per necklace. Once she makes and sells a certain number of
necklaces, she will break even, with identical expenses and sales. What would the total
expenses and sales be then? How many necklaces would that take?

Answers

Any statement as answers choice?

a=bc
Work out the value of c when
a=4 b=2

Answers

Answer:

c=2

Step-by-step explanation:

Divide the equation with b

a/b=c

4/2=c

c is equal to 2

so billy has 10 apples if he subtracts it by 6 then times it by 3 then divides it by 2 what does he get?

Answers

Answer:

6

Step-by-step explanation:

3 × (10 - 6) ÷ 2 =?

The strategy that we are using here is PEMDAS:

First, you subtract 6 from 10 which is 4. 10 - 6 =4

Next, you multiply 4 by 3. 4 × 3 = 12

Then, you divide 12 by 2. 12 ÷ 2 = 6

Your answer is 6.

Your welcome. Showed my work below.

2) In 2 ½ hours, Joaquin can bake 4 ¼ dozen cookies.
a. What is his unit rate in dozen cookies per hour?

Answers

Answer:

1.7

Step-by-step explanation:

4.25 : 2.5 = 1.7 per hour

Which of the following graphs represents the solution to the following system
of inequalities?
3x + 4y <12
2x - y24

Answers

Answer:

I am pretty sure it is most likely answer D.

Step-by-step explanation:

Hope this helps! Have a great day and good luck!

An inspector working for a manufacturing company hasa 99% chance of correctly identifying defective items and a 0.5% chance of incorrectly classifyinga good item as defective. The company has evidence that 0.9% of the items its line produce isnonconforming.(a) What is the probability that an item selected for inspection is classified as defective

Answers

Answer:

Step-by-step explanation:

From the given information:

Let A be the event where an item is identified as defective;

B₁ to be  the event where an item is actually defective

B₂ to be the event that the item is good

So;

P(B₁) = 0.009

P(B₂) = 0.991

Probability that an item is classified as defective when it is actually defective is P(A|B₁) = 0.99

Probability that an item is classified as defective when it is actually good is P(A|B₂) = 0.005

Probability of classifying a product as defective = P(A)

P(A) = P(A|B₁) × P(B₁) +  P(A|B₂) × P(B₂)

P(A) = 0.99 × 0.009 + 0.005 × 0.991

P(A) = 0.0139

P(A) = 1.39%

PLEASE HELP QUICK!!! GIVING BRAINLEST OUT

Answers

Answer:

44

Step-by-step explanation:

Answer:

use the pythagorean theorem to solve for the sides and the degree for both triangles so your using cos sin or tan im not sure which one

Step-by-step explanation:

i really hope this helps the question is really vague im sorry if this wasnt a help

sin(θ) = Opposite / Hypotenuse

cos(θ) = Adjacent / Hypotenuse

tan(θ) = Opposite / Adjacent

5 is what percent of 250?

Answers

Answer:

the answer will be 2

If you roll a number cube 600 times, how many times do you expect to roll a number greater than 4?

Answers

Answer:

If it was a 6 number cube the answer would be 200

Step-by-step explanation:

Answer:

200, hope this helped.....

Can a Spanish speaker re-check my sentences. ( do they make sense in the correct form , p and I)

Answers

Answer:

They're all right! Great Job! (Muy Bien)

Step-by-step explanation:

Answer: ellos si or yes they do

Find the slope of the line passing through the points (5, -6) and (1, -1).

Answers

Answer: -5/4

Step-by-step explanation:

The equation for solving for slope is y2-y1/x2-x1

substitute

-1-(-6) / 1-5

5/-4

slope= -5/4

If you deposit 4500 in an account paying 3.2% interest continually home much will the account balance be after 1.5 year

Answers

Answer:

We conclude that the total amount accrued, principal plus interest,  from compound interest on an original principal of  $4,500.00 at a rate of 3.2% per year  compounded continuously  over 1.5 years is $4,721.27.

Step-by-step explanation:

Given

Principle P = 4500 (Let say in $)Interest rate r = 3.2% = 0.032Time period t = 1.5 years

To determine

Accrue Amount A = ?

Using the formula

[tex]A\:=\:Pe^{rt}[/tex]

substitute r = 0.032, P = 4500, and t = 1.5

[tex]A\:=\:4,500.00\left(2.71828\right)^{\left(0.032\right)\left(1.5\right)}[/tex]

A = $ 4721.27

Therefore, we conclude that the total amount accrued, principal plus interest,  from compound interest on an original principal of  $4,500.00 at a rate of 3.2% per year  compounded continuously  over 1.5 years is $4,721.27.

Expand this expression
.-(-5+ +12)

Answers

Answer:

-(-5+12)

opening bracket

-1×-5=5

-1×+12=-12

5+12=17

Answer: = -7

Step-by-step explanation:

you have to remove the + sign and the period and your answer will be -7

Write the phrase as an expression.

3 times a number x

Answers

Answer:

It would have to be 3x or 3(x)

Pleasere answerrrrrrr

Answers

Answer: the 2nd one

Step-by-step explanation: because i said so ur the dum one

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