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For each question, perform each of the following steps: State the hypotheses and identify the claim. Find the critical values c. Compute the test...

This question was answered on Apr 19, 2010. View the Answer
For each question, perform each of the following steps:

a. State the hypotheses and identify the claim.
b. Find the critical values
c. Compute the test value.
d. Make the decision
e. Summarize the results.

1. At a certain university the mean income of parents of the entering class is reported to be $91,600. She surveys 100 randomly selected families and finds the mean income to be $96,321 with a standard deviation of $9555. With a=0.05, is she correct?

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1. At a certain university the mean income of parents of the entering class is reported to be
$91,600. She surveys 100 randomly selected families and finds the mean income to be $96,321
with a...

This question was asked on Apr 19, 2010 and answered on Apr 19, 2010.

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