Which of the following statements about testing hypotheses about two population

Question

Which of the following statements about testing hypotheses about two population variances is least accurate: a) If a one-tailed F-test is employed when testing a null hypothesis about two population variances, the test statistic is an F-value formed by taking the ratio of the two sample variances so that the sample variance predicted in Ha to be larger is placed in the numerator. b) If a two-tailed F-test is employed when testing a null hypothesis about two population variances, the test statistic is an F-value formed by taking the ratio of the two sample variances so that the sample variance predicted in HA to be larger is placed in the numerator. c) A two-tailed test for two population variances could have a nul hypothesis like the following: Ho : -of

Explanation / Answer

a. is least accurate.

EXPLANATION:In alternative hypothesis if the condition is sigma_1_square>sigma_2_square then the test condition will be of F(observed value)>F(tabulated value).In that case numerator will be of greater than type.But If alternative hypothesis is with condition sigma_1_square<sigma_2_square then the test condition will be of F(observed value)<F(tabulated value).In that case numerator will be of less than type.

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