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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