a) An individual graduate will have a salary over $45,000.
b) A group of nine graduates will have a group average over $45,000.
2. The national average for a new car loan was 8.28%. If the rate is normally distributed with a standard deviation of 3.5%, find these probabilities.
a) One can receive a rate less than 9%
b) One can receive a rate less than 8&
This solution gives the step by step method for computing probabilities based on Z score.