Question

A standard I.Q. test produces normally distributed results with a mean of 104 and a standard deviation of 16 for 52,000 students in grade 12 in the province. Approximately how many of these people would have I.Q.s below 76?

2,127

4,170

23,915

2,083

Answer 1

z = (76 - 104)/16
z = -1.75
4%
.04 * 52,000 = 2083