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. (a-1) what is the value of the population mean? 20 unknown 60 (a-2) what is the best estimate of this value? estimated population mean (c) for a 90% confidence interval, what is the value of t? (round your answer to 3 decimal places.) value of t (d) develop the 90% confidence interval for the population mean. (round your answers to 3 decimal places.) confidence interval for the population mean is and . (e) would it be reasonable to conclude that the population mean is 63 gallons? yes it is not possible to tell. no