Question

Suppose you want to test the claim that μ1 ≠ μ2. Assume the two samples are random and independent. At a level of significance of α = 0.05, when should you reject H0? Population statistics: σ1 = 1.5 and σ2 = 1.9 Sample statistics: x1 = 30, n1 = 50 and x2 = 28, n2 = 60

A. Reject H0 if the standardized test statistic is less than -1.645 or greater than 1.645.

B. Reject H0 if the standardized test statistic is less than -2.33 or greater than 2.33.

C. Reject H0 if the standardized test statistic is less than -1.96 or greater than 1.96.

D. Reject H0 if the standardized test statistic is less than -2.575 or greater than 2.575.

Answer 1