In Testing the Difference Between Two Population Means Using Two

Multiple Choice

In testing the difference between two population means using two independent samples, the population standard deviations were assumed to be known and the calculated test statistic equalled 2.56. If the test was two-tailed and a 5% level of significance had been specified, what would be the most appropriate conclusion from the findings?

A) to reject the null hypothesis
B) not to not reject the null hypothesis
C) to choose two other independent samples
D) to accept the null hypothesis