If a hypothesis test for a single population variance is to be conducted using a significance level of to 0.10,a sample size of n = 16,and the test is a one-tailed upper-tail test,the critical value is: A)z = 1.28. B)t = 1.345. C)x²= 22.3071. D)x²= 24.9958.

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For a chi-square test for variance with n = 16 and a significance level of 0.10 for an upper-tail test, the critical value is found using the chi-square distribution table, which gives x² = 22.3071.

If a Hypothesis Test for a Single Population Variance Is