Question

A population has a mean of 200 and a standard deviation of 60. Suppose a sample of size 100 is selected and  is used to estimate . Use z-table.

1. What is the probability that the sample mean will be within +/- 6 of the population mean (to 4 decimals)? (Round z value in intermediate calculations to 2 decimal places.)
   
   
2. What is the probability that the sample mean will be within +/- 17 of the population mean (to 4 decimals)? (Round z value in intermediate calculations to 2 decimal places.)

Answer 1