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Sample mean annual consumption

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Annual per captia consumption of milk is 22.6 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 31 individuals from the Midwestern town of Webster City showed a sample mean annual consumption of 24.8 gallons with a sample standard deviation of s=4.5.

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. At α=0.05, test for a significant difference. What is your conclusion?

Reference no: EM132413711

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