Annual per capita consumption of milk is 21.6 gallons (Statistical abstract of the United States: 2006). 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 s 5 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 mean.

b.

what is a point estimate of the difference between mean annual consumption in webster City and the national mean?

c.

At 5 .05, test for a significant difference. what is your conclusion?