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Author Question: A university has 5,000 students. The manager of food services at the university is interested in ... (Read 141 times)

Alainaaa8

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on: Jun 24, 2018
A university has 5,000 students. The manager of food services at the university is interested in determining the total lunch expenditure. A simple random sample of 121 lunch receipts was selected. The sample showed an average of 3 with a standard deviation of .40.
 a. Estimate the standard error of the sample mean.
  b. Develop an approximate 95 confidence interval for the population mean.
  c. Estimate the population's total expenditure for lunch.
  d. Develop an approximate 95 confidence interval for the total expenditure for lunch.

Question 2

Which of the following statements is true regarding the data set 8, 8, 8, 8, and 8?
 a. The range equals 0.
  b. The standard deviation equals 0.
  c. The coefficient of variation equals 0.
  d. All of these choices are true.


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alexisweber49

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Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .0359
b. 2.93 to 3.07 (rounded)
c. 15,000
d. 14,640.79 to 15,359.21

Answer to Question 2

D


Alainaaa8

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Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

Joy Chen

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Reply 3 on: Yesterday
Wow, this really help

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