Question

2) From the records of XYZ University, there were 1564 freshmen students who took the IQ test during 1st
Sem of S.Y. 2018 - 2019. Assume that the IQ test scores are normally distributed with a mean of 108 and a
standard deviation of 12. How many students have IQ scores (a) below 100; (b) above 120; and (c) between
95 and 125?

Answer 1

you can play around with Z table stuff at

davidmlane.com/hyperstat/z_table.html