Managerial Economics


Annual per capita consumption of milk in the U.S. is 21.6 gallons. Being from the Midwest, you believe milk consumption is higher there and wish to support your opinion. A sample of 16 individuals from the Midwestern town of Webster City showed a sample mean annual consumption of 24.1 gallons with a standard deviation of 4.8.

a. Develop a hypothesis test that can be used to determine whether the mean annual consumption in Webster City is higher than the national average.

b. Construct a test statistic

c. Using a level of significance of 5 percent, what is your conclusion?