The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 28 people reveals the mean yearly consumption to be 65 gallons with a standard deviation of 20 gallons. Assume the population distribution is normal. (Uset Distribution Table & z Distribution Table.) Required: a-1. What is the value of the population mean? multiple choice 1

• Unknown
• 65
• 20

a-2. What is the best estimate of this value? c.For a 99% confidence interval, what is the value of t? (Round your answer to 3 decimal places.) d. What is the margin of error? (Round your answer to 3 decimal places.) e. Develop the 99% confidence interval for the population mean. (Round your answers to 3 decimal places.) f. Would it be reasonable to conclude that the population mean is 50 gallons? multiple choice 2

• No
• Yes
• It is not possible to tell.