For a Sample of N = 30 Scores,X = 45

Multiple Choice

For a sample of n = 30 scores,X = 45 corresponds to z = 1.50 and X = 40 corresponds to z = +1.00.What are the values for the sample mean and standard deviation?​

A) ​M = 35 and s = 10
B) ​M = 30 and s = 15
C) ​M = 35 and s = 15
D) ​M = 30 and s = 10