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The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 14 people reveals the mean yearly consumption to be 60 gallons with a standard deviation of 20 gallons. Assume the population distribution is normal. (Use Distribution Table.) a-2. What is the best estimate of this value? Estimated population mean 60 b. For a 95% confidence interval, what is the value of t? (Round your answer to 3 decimal places.) Value oft c. What is the margin of error? (Round your answer to 3 decimal places.) Margin of error d. Develop the 95% confidence interval for the population mean. (Round your answers to 3 decimal places.) Confidence interval for the population mean is and