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Evidence to conclude that the average house size

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Reference no: EM132009113

Suppose the average size of a new house built in a certain county in 2006 was 2,275 square feet. A random sample of 25 new homes built in this county was selected in 2010. The average square footage was 2,199?, with a sample standard deviation of 230 square feet.

a. Using α=0.01, does this sample provide enough evidence to conclude that the average house size of a new home in the county has changed since? 2006?

b. Use technology to determine the? p-value for this test.

a. Determine the null and alternative hypotheses. Choose the correct answer below.

H0?: μ=2,275 and H1?: μ≠2,275

Determine the critical? value(s).

The critical? value(s) is(are) ______.

?(Round to three decimal places as needed. Use a comma to separate answers as? needed.)

Reference no: EM132009113

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