(30 points)

mr. mosley bought 3 magazines for $7.95 each and 2 books for $12.95. if the sales tax is 9%, what is the total cost of mr. mosley's purchases?

a) $ 4.48

b) $ 44.98

c) $ 49.75

d) $ 54.23

If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus2.00, minus1.00, 0, 1.00, 2.00? why? a. the z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. b. the z score of 0 is most preferable because it corresponds to a test score equal to the mean. c. the z score of minus2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. d. the z score of minus1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average