1. Dan is working to get through his general education requirements at a local community college. As a result, he is enrolled in a statistics course as well as a history course. on his first round, Dan got a 79% on his statistics exam and a 84% on his history exam. The class results for his statistics exam were normally distributed with a mean of 64% and a standard deviation of 6.23% . The results of his history exam were also normally distributed with a mean of 78% and stand deviation of 3.27. Which of the following is true about Dan's performance ?
a) Dan performed better on his statistics exam because the Z-score of his statistics exam was larger than the Z-score for his history exam.
b) Dan performed better on his history exam because the Z-score of his history exam was closer to 0 than the Z-score for his statistics exam
c) Dan performed better on his history exam because the Z-score of his history exam was larger than the Z-score for his statistics exam
d) Dan performed better on his statistics exam because the Z-score of his statistics exam was closer to 0 Than the Z-score for his history exam.
2. The median score of a students's seven quizzes is 80 points. The instructor allows each student to drop the lowest score, which in this case is 62 points. The median score of the remaning six is:
a) 71 points, 80 points,83 points or cannot be determined from the information given
b) If 80 was the mean score, could the mean of the remaining 6 be found?