Question

# 1-The owner of Britten's Egg Farm wants to estimate the mean number of eggs laid per chicken. A sample of 20

chickens shows they laid an average of 20 eggs per month with a standard deviation of 2 eggs per month.

~what is the 95% confidence interval for the population mean?

~Would it be reasonable to conclude that the population mean is 21 eggs? What about 25 eggs?

2-The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 16 people reveals the mean yearly consumption to be 60 gallons with a standard deviation of 20 gallons.

~what is the 90% confidence interval for the population mean.

~Would it be reasonable to conclude that the population mean is 63 gallons?

3Merrill Lynch Securities and Health Care Retirement Inc. are two large employers in down-town Toledo, Ohio. They are considering jointly offering child care for their employees. As a part of the feasibility study, they wish to estimate the mean weekly child-care cost of their employees. A sample of 10 employees who use child care reveals the following amounts spent last week.

$107

$92

$97

$95

$105

$101

$91

$99

$95

$104

~what is the 90% confidence interval for the population mean. Interpret the result.

4-The Greater Pittsburgh Area Chamber of Commerce wants to estimate the mean time workers who are employed in the downtown area spend getting to work. A sample of 15 workers reveals the following number of minutes spent traveling.

29

38

38

33

38

21

45

34

40

37

37

42

30

29

35

~what is the 98% confidence interval for the population mean. Interpret the result.

#### Top Answer

It would be fairly reasonable to conclude the population mean is 21. It's slightly out of the confidence interval but by 0.12... View the full answer