The mean score for a standardized test is 1700 points The re

The mean score for a standardized test is 1700 points. The results are normally distributed with a standard deviation of 75 points. What is the z-Score test result of 1300 points?

Solution

The z-score for [x_i] in a very small sample population is given by:

[z=(x_i-barx)/s]

Here, [barx] =1700, s=75,

Thus, z-score for point 1300 is given by:

[z=(1300-1700)/75=-5.3333]

=> answer.