According to the National Association of Home Builders, the average cost of building a home in the Northeast is $117.91 per square foot. A random sample of 38 new homes indicated that the mean cost was $122.67 and the standard deviation was $16. Can it be concluded that the mean cost differs from $117.91, using the 0.10 level of significance?

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According to the National Association of Home Builders, the average cost of building a home in the Northeast is $117.91 per square foot. A random sample of 38 new homes indicated that the mean cost was $122.67 and the standard deviation was $16. Can it be concluded that the mean cost differs from $117.91, using the 0.10 level of significance?

 

State the hypotheses and identify the claim with the correct hypothesis.

:H0=μ ▼claim/ not claim?

:H1>μ145 ▼claim/ not claim?

This hypotheses test is a ▼one-tailed test/two tail?

 
Part 2 of 5

Find the critical value(s). Round the answer to two decimal places. If there is more than one critical value, separate them with commas.

Critical value(s): 
 
Part 3 of 5

Compute the test value. Always round z score values to two decimal places

 
Part 4 of 5

Make the decision.

▼reject/Do not reject the null hypothesis.
 
Part 5 of 5

Summarize the results.

There ▼(Choose one) enough evidence to support the claim that the mean number of Facebook friends is greater than 145.
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