Solve the Problem

question 52

Multiple Choice

Solve the problem. Round the standard score to the nearest tenth before using the z-score tables. Express your answer as
a decimal rounded to four decimal places.
-The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 84 inches, and a standard deviation of 10 inches. What is the likelihood that the mean annual precipitation during
25 randomly picked years will be less than 86.8 inches?

• A)0.9192
• B)0.5808
• C)0.0808
• D)0.4192