Introduction to statistics

Question

Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z- score of a man 70.3 inches tall. ( to 2 decimal places)

Answer 1

z=(x-mean)/s

= (70.3-69)/2.8

= 1.3/2.8

=13/28 =about .6429

z score = .64 rounded to 2 decimal places