Question

Part A

a national achievement test is administered annelida to third graders. The test has a mean score of 100 and a standard deviation of 15. if Jane z-score is 120, what was her score on the test?

Part B
the grades on a history midterm at Gardiner high School are normally distributed with a mean of 73 and standard deviation of 4.0. The z score for Ben is 0.50. find the Ben's score​

Answer 1

Explanation:

z score= x - mean/standard deviation

1.20= x -100/15

18= x -100

118=x

z score= x - mean/standard deviation

0.5=x-73/4

2=x-73

75= x