The following output (from (mathrm{R}) ) presents the results of a hypothesis test for a population mean
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The following output (from \(\mathrm{R}\) ) presents the results of a hypothesis test for a population mean \(\mu\).
a. Is this a one-tailed or a two-tailed test?
b. What is the null hypothesis?
c. Can \(H_{0}\) be rejected at the \(5 \%\) level? How can you tell?
d. Compute the \(P\)-value using a \(z\) test. Are the results similar?
e. The sample standard deviation is \(s=21.2\). Use the value of \(s\) along with the output to compute the \(P\)-value for testing \(H_{0}: \mu=0\) versus \(H_{1}: \mu eq 0\).
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