A hypothesis tests that two population means are equal.A sample of 10 with a standard deviation of 5 is selected from the first population and a sample of 15 with a standard deviation of 5 from the second population.The standard deviations are equal.Testing the claim at the 0.01 level,what is the critical value? Assume unequal standard deviations.
A)3.355
B)3.169
C)2.896
D)2.764

Question

Quizplus · Accepted Answer

The critical value for a two-tailed test with a significance level of 0.01 and unequal standard deviations is 3.355.

A Hypothesis Tests That Two Population Means Are Equal