On a test of physical fitness, 18-year-olds' scores are normally distributed with a mean of 140 and a standard deviation of 25.
a. Approximately what percentage of 18-year-olds have scores above 190? Below 165? Below 115?
Use the normal curve approximation rules and be sure to include a sketch.
b. Explain your answers and procedure to a person who is not familiar with the normal curve or normal curve areas.

Question

Quizplus · Accepted Answer

The Answer of On a test of physical fitness, 18-year-olds' scores are normally distributed with a mean of 140 and a standard deviation of 25.
a. Approximately what percentage of 18-year-olds have scores above 190? Below 165? Below 115?
Use the normal curve approximation rules and be sure to include a sketch.
b. Explain your answers and procedure to a person who is not familiar with the normal curve or normal curve areas.

On a Test of Physical Fitness, 18-Year-Olds' Scores Are Normally