heights of students in a class with 27 students have the first quartile q1= 69.5 inches and the interquartile range IQR= 4 inches.

Here are the heights (in inches) of the shortes five students in this class, 66,66,68,69,69

Here are the heights (in inches) of the tallest five students in this class 75,75,76,76,78

How many students in this class have height considered as outliers by the 1.5 x IQR rule