Question: A random sample of 51 observations was selected from a normally distributed population. The sample mean was xbar = 22, and the sample variance was s ² = 11.0. Does the sample show sufficient reason to conclude that the population standard deviation is not equal to 5 at the 0.02 level of significance?  Use the p -value method.
State the null and alternate hypotheses
Determine which test statistic applies, and calculate it
Determine the corresponding probability, and compare to a
State your decision: Should the null hypothesis be rejected?

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