Question

The mean height of women in a country​ (ages 20−​29) is 63.7 inches. A random sample of 55 women in this age group is selected. What is the probability that the mean height for the sample is greater than 64 ​inches? Assume σ=2.76.

(a) The probability that the mean height for the sample is greater than 64 inches is ________________. (round to four decimal places)

Answer 1

use Ti 84 calculator

2nd button --> DISTR --> normalcdf

set the following values

lower = 64

upper = 1E99

mean = 63.7

standard deviation =