The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 23 people reveals the mean yearly consumption to be 78 gallons with a standard deviation of 20 gallons. Assume that the population distribution is normal. (Use t Distribution Table.)

a-1.	What is the value of the population mean?
	20 Unknown 78

a-2.	What is the best estimate of this value?

Estimate population mean

c.	For a 98% confidence interval, what is the value oft?(Round your answer to 3 decimal places.)

Value oft

d.	Develop the 98% confidence interval for the population mean.(Round your answers to 3 decimal places.)

Confidence interval for the population mean isand.

e.	Would it be reasonable to conclude that the population mean is 69 gallons?
	No It is not possible to tell. Yes