7. A population has a mean of 40. What is the new mean if: a. 5 points is added to each score = 32 b. each score is multiplied by 3 8. After 8 points were added to each score in sample, the mean is found to be M=40. What was the value for the original mean? 9. A sample of n=8 scores has a mean of M=7. If one of the scores is changed from X=20 to X=4, what is the value of the new mean? NEW M 1 M = 7 X = 46 M = EX . h 40 40 Ex= 66 8 : 5 10. A sample of n=5 scores has a mean of M=12. If one new score with a value of x=18 is added to the sample, what is the mean of the sample? OLD NEW n - 5 m : m = 12