The diameter of an electric cable is normally distributed, with a mean of 0.8 inch and a standard deviation of 0.03 inch. What is the probability that the diameter will exceed 0.83 inch? (You may need to use the standard normal distribution table. Round your answer to three decimal places.)

Question

Thank you very much for your time.

Answer 1

Tools like this below replace tables traditionally found at the back of textbooks

http://davidmlane.com/hyperstat/z_table.html

enter your mean and sd,
click on "above" for "exceeds 0.83" and enter the data
to get .1587 ,or
.159 correct to 3 decimals