Some
doctors believe that a person can lose five pounds, on average, in a month by
reducing his or her fat intake and exercising consistently. Suppose
weight loss has a normal distribution. Let x= the amount lost (in pounds) by a
person in a month. Assume a standard deviation of 2 lbs.

1.
what is the z-score if a person lost 10 lbs in a month?

2. what is the z-score if a peson gained 3 lbs
in a month?

3.Suppose Jerome's weight loss this mo was 1.75 st. dev to right of mean. what is wt change?