Question

X is a normally distributed random variable with mean 62 and standard deviation 18.

What is the probability that X is between 44 and 80?


Write your answer as a decimal rounded to the nearest thousandth.​

Answer 1

0.683

Explanation:

If you have a calculator with statistical functions, this work is especially straightforward.

On the calculator, type in

normcdf(44,80,62, 18)

The calculator returns the result (probability) 0.683