the average annual salary for government employee is 41979. Use this figure as the population mean and assume that the population std dev is 5000. suppose that a random sample of 50 employees will be selected from the population.
1) calculate the value of the standard error of the mean? i got 707.1
2) what is the probability that the sample mean will be laess thatn 41979? explain. (can't figure this out)
3) what is the probability the sample mean will be within 1000 of the population mean? i got .8414