Question 11 2 pts When carrying out a t test for independent means: O only the .01 significance level should be used because of the greater power compared to a t test for dependent means O the medians of the two populations are assumed to be equal O only the .10 significance level should be used because of the assumption that the variances of the two distributions should be equal O the null hypothesis is rejected if the computed t score is more extreme than the cutoff t scoreQuestion 12 2 pts For the following problem, please round to two decimal places: A social psychologist interested in cultural differences compared women of two ethnic groups on a Role Approval Index on which high scores indicated high degrees of approval of one's own social role. The results were as follows. Ethnic Group A: N = 19, M = 56, S = 4.9; Ethnic Group B: N = 11, M = 53, S = 4.7. What is the pooled estimate of the population variance?Question 13 2 pts For a t-test for independent samples, the mean of the distribution of differences between means when the null hypothesis is true is greater than 1. O True O False