Question

Find the probability and interpret the results. If​ convenient, use technology to find the probability.

The population mean annual salary for environmental compliance specialists is about $63,000. A random sample of 34 specialists is drawn from this population. What is the probability that the mean salary of the sample is less than ​$60,500​? Assume σ=​$5,900.

The probability that the mean salary of the sample is less than ​$60,500 is ___________________ (round to four decimal places).

Answer 1

use Ti 84

Press 2nd button --> DISTR --> normalcdf

lower = -1E99, upper = 60500, mean = 63000 and standard deviation = 5900/

this gives us