Question

50 POINTS!!!!

both parts A and B
The air force reports that the distribution of heights of male pilots is approximately normal, with a mean of 72.6 inches and a standard
deviation of 2.7 inches.
Part A: A male pilot whose height is 74.2 inches is at what percentile? Mathematically explain your reasoning and justify your work. (5
points)
Part B: Air force fighter jets can accommodate heights of soldiers between 70 inches and 78 inches without compromising safety.
Anyone with a height outside that interval cannot fly the fighter jets. Describe what this interval looks like if displayed visually. What
percent of male pilots are unable to fly according to this standard? Show your work and mathematically justify your reasoning. (5 points)

Answer 1

Explanation:

Given that X - the distribution of heights of male pilots is approximately normal, with a mean of 72.6 inches and a standard deviation of 2.7 inches.

Height of male pilot = 74.2 inches

We have to find the percentile

X = 74.2

Corresponding Z score = 74.2-72.6 = 1.6

P(X<174.2) = P(Z<1.6) = 0.5-0.4452=0.0548=5.48%

i.e. only 5% are below him in height.

Thus the malepilot is in 5th percentile.