The mean height of a basketball team is 6 feet with a standard deviation of 0.2 feet. The team's center is 6.9 feet tall. Find the center's z score. Is his score unusual?
A) 4.5, yes
B) 3.83, no
C) 4.95, yes
D) 4, no

Question

Quizplus · Accepted Answer

The z score is calculated as (X - μ) / σ = (6.9 - 6) / 0.2 = 4.5. A z score of 4.5 is considered unusual as it is more than 3 standard deviations away from the mean.

The Mean Height of a Basketball Team Is 6 Feet