For the data in question 13 find the raw scores that corresp

For the data in question 13, find the raw scores that correspond to the following:
9    5    10    7    9    10    11    8    12    7    6    9

(a) z = +1.22; (b) z = 0.48.

Solution

For the given data first find mean µ and standard deviation using Excel:

µ=8.583,=2.065

a)By the formula of raw score:

x=µ+z=8.583+1.22*2.065=11.1023

b) By the formula of raw score:

x=µ+z=8.583-0.48*2.065=7.5918