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?
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
State the hypotheses and identify the claim with the correct hypothesis.
:H1>μ145 ▼claim/ not claim?
This hypotheses test is a ▼one-tailed test/two tail?
Find the critical value(s). Round the answer to two decimal places. If there is more than one critical value, separate them with commas.
Compute the test value. Always round z score values to two decimal places
Make the decision.
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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