Use the Following Information for Questions:
Suppose That the Weight

Short Answer

Use the following information for questions:
Suppose that the weight of apples eaten by individual Americans each year can be described by a normal distribution with mean $\mu$ = 15 pounds and standard deviation $\sigma$ = 5 pounds per year.
-For a random sample of n = 9 people, what is the z-score for a sample mean $\overline{x}$ = 18 pounds?