Question

A test has 200 points. THe mean is 120 and the standard deviation is 20. In order to pass the test one must score 140 points. If 360 people took the test how many passed

Answer 1

find the z-score for 140, then use your tables or charts or some software to find that
.1587 will pass

so number of the 360 that will pass
= .1587(360)
= 57 rounded to the nearest person

Answer 2

57