1. If two samples are used in a hypothesis test for which the combined degrees of freedom is 24, which one of the following is TRUE about the two sample sizes? Assume the population standard deviations are equal. A. B. C. D. 2. The results of a mathematics placement exam at Mercy College for two campuses is as follows: Campus Number Mean Population Standard Deviation 1 330 33 8 2 310 31 7 What is the null hypothesis if we want to test the hypothesis that the mean score on Campus 1 is higher than on Campus 2? A. B. C. D