pl

A Statistics professor gave an exam. The mean score is 54 and the standard deviation is 10. He wants to scale the scores by multiplying the scores by 0.5 and then adding 50 points to each student's score. The new mean and standard deviation are 0 mean = 54 standard deviation = 5 O mean = 54 standard deviation = 55 O mean = 77 standard deviation = 5 0 mean = 77 standard deviation = 10