A random sample of 51 observations was selected from a normally distributed population. The sample mean was x = 79, and the sample variance was s^2 = 29.0. Does the sample show sufficient reason to conclude that the population standard deviation is not equal to 8 at the 0.05 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
· State your decision: Should the null hypothesis be rejected