This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A university has 5,000 students. The manager of food services at the university is interested in ... (Read 244 times)

Alainaaa8

  • Hero Member
  • *****
  • Posts: 576
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.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

alexisweber49

  • Sr. Member
  • ****
  • Posts: 311
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

  • Member
  • Posts: 576
Reply 2 on: Jun 24, 2018
YES! Correct, THANKS for helping me on my review

aruss1303

  • Member
  • Posts: 314
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Trees provide ecosystem services to people Trees provide ecosystem services to people
Vitamins Found Widely in the Food Groups Vitamins Found Widely in the Food Groups
Mexican Food Mexican Food
Food that may carry pathogens that should be avoided by pregnant women Food that may carry pathogens that should be avoided by pregnant women
Should Parents Make Their Own Baby Food? Should Parents Make Their Own Baby Food?
Tallgrass Prairie: Food Chain and Trophic Levels Tallgrass Prairie: Food Chain and Trophic Levels
Video: Electrocardiogram Examination

For a complete list of videos, visit our video library