the head circumferences of adult males have a bell-shaped distribution with the mean= 65cm and standard deviation =2cm.
a. what is the head circumference such that only 2.5% of adult males have a smaller head circumference?
b. what is the head circumference such that only 2.5% of adult males have a larger head circumference?
c. what is the head circumference such that only 16% of adult males have a larger head circumference?
2 answers