In a distribution of scores, X = 70 corresponds to z = +0.50, and X = 64 corresponds to z = -1.00. Find the mean and standard deviation for the distribution. (Answer both as a whole number.)

Thank you for the opportunity to help you with your question!

z1 = (70-u)/s = 0.5

z2 = (64-u)/s=-1.0

70-u= 0.5s

64-u=-s

subtract the two eqs

6 = 1.5 s

s = 4.0

u = 64-s = 60

Which answer is the mean, and the standard deviation? Thank you.

u is the mean s is the standard deviation

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