1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
astra-53 [7]
3 years ago
5

The amount people who pay for electric service varies quite a bit, but the mean monthly fee is $168 and the standard deviation i

s $34. The distribution is not Normal. Many people pay about $90 in rural areas of the country and about $150 in urban areas of the country, but some pay much more. A sample survey is designed to ask a simple random sample of 1,200 people how much they pay for electric services. Let xbar be the mean amount paid. Part A: What are the mean and standard deviation of the sample distribution of xbar? Show your work and justify your reasoning. (4 points) Part B: What is the shape of the sampling distribution of xbar? Justify your answer. (2 points) Part C: What is the probability that the average electric service paid by the sample of electric service customers will exceed $170? Show your work. (4 points)

Mathematics
1 answer:
dybincka [34]3 years ago
4 0

Answer:

Part A)

Mean = $168

standard deviation = 0.98

Part B)

1200

Part C)

0.0207

Step-by-step explanation:

Find the given attachments for solution

You might be interested in
Tim's credit card has a restriction that he must pay either 15 percent of the unpaid balance or $25, whichever is greater
AveGali [126]

Answer:

He has to pay 15% as that is 32 and more than $25

Step-by-step explanation:

If you take 15% out of 216 it will become 32.

3 0
3 years ago
Read 2 more answers
What does this mean? I don’t understand.
Nutka1998 [239]

ninety four means $94. 36/100 means $0.36. when you put these together you get $94.36

5 0
2 years ago
As the value of the multiple coefficient of determination increases,
Leona [35]

Answer:

a.the goodness of fit for the estimated multiple regression equation increases.

Step-by-step explanation:

As the value of the multiple coefficient of determination increases,

a. the goodness of fit for the estimated multiple regression equation increases.

As we know that the coefficient of determination measures the variability of response variable with the help of regressor. As we know that if the value of the coefficient of determination increases strength of fit also increases.  

7 0
3 years ago
At Norman's Newsstand, 5 magazines cost $10.00. How many magazines could you buy with $24.00?
kow [346]

Answer: you could buy 12 magazines

Step-by-step explanation:

each magazine is $2

6 0
2 years ago
Read 2 more answers
Pls help, (20 pts, will mark u the brainliest when your correct, PLS ANSWER ASAP)
tester [92]

Answer:

-7

Step-by-step explanation:

7.

step-by-step explanation:

the coefficient multiplies the variable.

it is -7.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Worth a  brainliest if the answer is correct.
    12·1 answer
  • Product of -3x(5x 1)
    15·1 answer
  • Anna is following this recipe to make biscuits.
    9·1 answer
  • PLEASE HELP MEEE AM BEING TIMED
    13·1 answer
  • MULTIPLE CHOICE HELP ASAP! Brainliest for correct answer.
    8·1 answer
  • A car drives 215 km east and then 45 km north. What is the magnitude of the car's displacement? Round your answer to the nearest
    9·1 answer
  • Please help I will mark Brainiest (No links please)
    7·2 answers
  • What represents the inverse of the function f(x) = 4x
    11·1 answer
  • Ram has three times as many Rupees to coins as he has rupees 5 coins if he has in all a sum of rupees 77 how many coins of Rupee
    12·1 answer
  • Latoya buys candy that costs 5 per pound. She will spend more than $30 on candy. What are the possible numbers of pounds she wil
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!