Question: 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 241 gallons with a standard

deviation of s = 4.8.

1. Develop a hypothesis test that can be used to determine whether the mean annual
   consumption in Webster City is higher than the national mean.
2. What is a point estimate of the difference between mean annual consumption in
   Webster City and the national mean?
3. At α = .05, test for a significant difference. What is your conclusion?

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