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The public relations officer for a particular city claims the average monthly cost for childcare outside the home for a single child is $700. A potential resident is interested in whether the claim is correct. She obtains a random sample of 64 records and computes the average monthly cost of this type of childcare to be $689 with a standard deviation of $40.
Perform the appropriate test of hypothesis for the potential resident using = 0.01.
Test statistic = ______________
Critical Value(s) = ______________
Conclusion: ______________
Interpretation: __________________________________________
Find the p-value for the test above.
p-value = ______________
What effect, if any, would there be on the conclusion in part (a) if you changed to 0.05?
The conclusion would ______________.
Find the power of the test when is actually $685 and
= 0.05.
______________
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