D) They are all equal 45. A set of scores has a mean of 5.3 and a standard deviation of 1.6. If 4 points are added to each score, what are the new mean and standard deviation? A) Mean = 5.3, standard deviation = 1.6 B) Mean = 9.3, standard deviation = 1.6 C) Mean = 5.3, standard deviation = 5.6 D) Mean = 9.3, standard deviation = 5.6 46. What are the mean and standard deviation of a set of T