Question: Repeat Example 9.7 using the critical value approach. Recall that a research analyst wishes to determine if average back-to-school spending differs from $606.40. A random

Repeat Example 9.7 using the critical value approach. Recall that a research analyst wishes to determine if average back-to-school spending differs from $606.40.

A random sample of 30 households, drawn from a normally distributed population with a standard deviation of $65, results in a sample mean of $622.85. P-56

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