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?