In a hypothesis test for the population variance, the hypotheses are H0: ?2 = 100 vs. H1: ?2 ? 100 . If the sample size is 15 and the test is being carried out at the 10% level of significance, the rejection region is:
a. ?2 < 6.571 or ?2 > 23.685.
b. ?2 < 7.790 or ?2 > 21.064.
c. ?2 < 8.547 or ?2 > 22.307.
d. ?2 < 7.261 or ?2 < 24.996.
A
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