A business analyst is investigating whether the mean amount of purchases made by customers at an online department store is greater than $100. The analyst obtained a random sample of 56 orders and calculated a sample mean of $102.30 and a sample standard deviation of $5.30.
Which of the following is an appropriate test for the investigation?

Answers

Answer 1

Answer:

B

Step-by-step explanation:

I don't know

Answer 2

An appropriate test for the investigation is, One sample t-test for sample mean. So option B is correct

What is a random sample ?

The process of selecting a sample of data from a population in order to draw conclusions about the population is known as random sampling. Additionally known as probability sampling. Non-probability sampling, often known as non-random sampling, is this sample's opposite. Simple random sampling, stratified sampling, cluster sampling, and multistage sampling are the main forms of this sampling. Convenience samples are often referred to as non-arbitrary samples in sampling methodologies.

Given that,

Population mean = $100

Sample = n = 56

Sample mean =  $102.30

sample standard deviation = $5.30

So, all the data mean, standard deviation is given

therefore, t-test used and one type of sample used as well

Hence, It is one-sample t-test for sample mean

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Related Questions

please help me i will mark you brainliestttttttttttttttt

Answers

Answer:

28 :)

Step-by-step explanation:

Put these numbers in descending order.
0.98
0.925
0.88
0.7

Answers

The descending values of the numbers is 0.98 > 0.925 > 0.88 > 0.7

Given data ,

Let the numbers be represented as A

Now , the value of A is

A = { 0.98 , 0.925 , 0.88 , 0.7 }

And , arranging in the descending order means from the greatest to the least value

So , the value of A is 0.98 > 0.925 > 0.88 > 0.7

Hence , the descending order is 0.98 > 0.925 > 0.88 > 0.7

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The diameter of a circle is 5 cm. Find its area to the nearest tenth

Answers

Answer:

Check pdf

Step-by-step explanation:

check pdf it should help you out a lot!

HELP PLEASE
Solve for x

Answers

Answer:

I beleive the answer is 9

(sorry if its wrong)

two sons have name Monday and Wednesday and mother's Friday what will be the name of father? let's check ur sense​

Answers

Answer:

I don't have any sense lol but ummmm Sunday I'm guessing.

Step-by-step explanation:

Step-by-step explanation:

hii I'm fatima ahnjong best Friend so you can talk to her with my account

A population of 805 cheetahs decreases by 10% per year. How many cheetahs will there be in the population after 6 years?

Answers

Answer:

Step-by-step explanation:

y = a(b)^x

a would represent the initial value.

b would represent the change

x represents the number of years

y = 805(0.9)^6

y = 805(0.531441)

y = 427.8

y =  427 cheetahs

Find the 11th term of the geometric sequence 6, -18, 54,

Answers

Answer:

354294

Step-by-step explanation:

a₁ = 6 = 6 * (-3)⁰

a₂ = -18 = 6 * (-3)¹

a₃ = 54 = -18 * (-3) = 6 * (-3)²

a₁₁ = 6 * (-3)¹⁰ = 354294

WILL GIVE BRAINLIEST TO THE FIRST ANSWER!! PLSSSS HELP!!
13.42 - 0.16x = 12.92 + 0.05 (x+3)

What is the value of x?

Answers

Is it supposed to be a whole number? I got a decimal as an answer.

X = 1 2/3 or 1.6667

Find the Volume of the Pyramid. Show your work.

Answers

Answer:

I think it's 62. volume is basically just adding the length, width, and height

What is the inverse function of f(x) =x/ x-2

Answers

Answer:

f^-1(x)=2x/x-1

Step-by-step explanation:

Answer:

f-1(x) = 2x/x-1

Step-by-step explanation:

Bottom left

I checked my work with Chegg

PLEASE HEEEEEEEEEEEEEEEEEELP

Answers

I’m pretty sure it’s 3 and a 2

Question 10
A pair of sneakers is originally priced at
$125. They are on sale for $75. What is
the percent discount?


-please show your work

Answers

Answer: 40% discount

Step-by-step explanation:

First lets find the difference between original price and sale price so $125-$75= $50

So we get a discount of 50 dollars off the original price

Next lets find out how much of %$125 is that $50 so [tex]\frac{50}{125}[/tex] as a decimal is .4 or 40%. To check our work lets multiply 125 by 0.4 so 125*0.4= 50 which is the discount.

I don’t get this i need help

Answers

Answer:

a

Step-by-step explanation:

Answer:

Answer=(X + 5, Y - 4)

Step-by-step explanation:

X + 5 means you move to the right 5 places then Y - 4 means you move down 4 places.

SOMEONE HELPPPP PLS!!!?

Answers

Answer:

1

Step-by-step explanation:

:)

Answer:

1

Step-by-step explanation:

3(2x+1)=9      *multiply 3 to 2x and 1*

6x + 3 = 9     *subtract 3 from both sides*

6x = 6           *divide each side by 6

x=1

The total bill for a group of friends having dinner was $130. ​They paid the entire bill using only $5 and $ 10$ bills. ​In total, there were 16 bills used. ​How many of each type of bill were used to pay the bill?

Answers

Answer:

6 five dollar bills and 10 ten dollar bills

Step-by-step explanation:

130 = 5x + 10y

x + y = 16

Tamekia's garden has 9 tomato plants, 5 pepper plants, 3 squash plants, and 6 pumpkin plants. For every 3 tomato plants in Tamekia's garden, there is 1 _____ plant. *

Answers

Answer:

There is 1 squash plant for every 3 tomato plants.

Step-by-step explination:

so we have 9,5,3, and 6.  

so, for every 3 tomato plants in Sunny's garden, there will be 1 squash plants.

NO FAKE ANSWERS PLZ I NEED HELP ASAP how many jars of peppermint candies are represented on the histogram? 19 brainly points and I will give you brainiest
and I need help with all the questions so plz help

Answers

Answer:

i think 25 pepper mint candies.

every week a company provides fruit for its office employees. They can choose from among five kinds of fruit. What is the probability distribution for the 30 pieces of fruit, in the order listed?
(answer choices in the picture) PLZ HELP!

Answers

Answer:

option A 1/5, 3/10, 1/15, 4/15, 1/6

The probability distribution for the 30 pieces of fruit is,

A. 1/5, 3/10, 1/15, 4/15, 1/6.

What is a probability distribution?

A probability distribution is a mathematical function used in probability theory and statistics that estimate the likelihood that various possible outcomes of an experiment will occur.

Given, Every week a company provides fruit for its office employees and the total number of fruits is 30 and the number of different types of food is

listed in the table.

Therefore, The probability distribution of apple (A) is 6/30 = 1/5.

Similarly, P(B) = 9/30 = 3/10.

P(L) = 2/30 = 1/15.

P(O) = 8/30 = 4/15.

P(P) = 5/30 = 1/6.

So, The distribution table is 1/5, 3/10, 1/15, 4/15, 1/6.

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Find the Mean Absolute Deviation.
12
5
7
8
15
15
2
8

Answers

The mean would be 7 I think I am not sure

wich set of numbers is arranged in decreasing order?​

Answers

Answer:

the answer is c...........

A school bus travels a total of 130 miles round trip taking students on a field trip. The bus takes 3 hours from start to finish. What is the average speed of the school bus on the field trip.

Answers

Answer: I think it’s 43

Step-by-step explanation:

Melanie makes 12 out of 16 foul shots. What is the experimental probability that she will miss her next foul shot?

Answers

25% probability she misses her nest fuel shot

A restaurant has a total of 30 employees there are 14 who work in the evening and the rest work during the day what is the ratio of employees who work in the evening to employees who work during the day?



A: 7:8
B: 7:15
C: 8:7
D: 8:15

Answers

A is the answer I hope it’s correct

Jake has 3 pizzas and wants to split them between him and 4 other people
What fraction of a pizza does everyone get?

Answers

answer :

3/4

Step-by-step explanation:

it just is.

Answer:

Each person will get 3/4 of a pizza.

Step-by-step explanation:

If you cut each pizza equally into four slices and divide the 12 pieces among the four people, each will receive three pieces.

Mike has $25. His mother gives him $5 per week. Let y be the amount remaining as a function of the number of weeks,

Answers

If he has 25 and he gets 5 dollars per week he has 40 dollars in 3 weeks!

Pls help it’s for math pls pls help

Answers

the degree is 6
leading polynomial is 23

What two measures of central tendency about the roller coasters cannot be determined using the box plot?

Answers

Answer:

Mode and mean

Step-by-step explanation:

The measure of central tendency that can be determined by just looking at the  box plot is : MEDIAN but the other measures of central tendencies. that cannot be determined  accurately by just looking at the box plot . are MODE  and MEAN

This simply because of how a box plot is created ( it makes it easier to determine the median value other than other central tendencies )

PLEASE FOR BRAINLIEST!! which statements describe one of the transformations performed on f(x)=x^2 to create g(x)=(x-2)^2+5? choose all that apply.

Answers

Answer:

A translation of 5 units up

and

A translation of 2 units to the right

Step-by-step explanation:

please help i need this asap

Answers

Answer:

x=68°

Step-by-step explanation:

In quadrant 3 the FULL  value is 90°

90°-22°

=68°

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

Hope this helped!!

Answer:

68 degrees

Step-by-step explanation:

9
10
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Given that the function graphed is f(x), what is f(4)?
A)
-2
B)

4
o
-6
D
ep.com/modules/questions/qq.php?testid-1020&assignment_id=43384472&strand-5066&element-40471&totalQuestions-108ck-UTCXIN TYEETK8condition-random

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One is the negative number to the 10 it’s not because their towo dif one
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