Compute Empirical Probability
Solve the problem. Round to the nearest hundredth of a percent if needed.
-During July in Jacksonville, Florida, it is not uncommon to have afternoon thunderstorms. On average, 8.7 days have afternoon thunderstorms. What is the probability that a randomly selected day in July will not
Have a thunderstorm?
A)71.94%
B)71.00%
C)28.06%
D)91.30%

Question

Quizplus · Accepted Answer

The probability of a randomly selected day not having a thunderstorm is equal to (total possible days - days with thunderstorms) / total possible days. In this case, the total possible days in July is 31 (assuming a non-leap year), and the average number of days with thunderstorms is 8.7. Therefore, the probability of a randomly selected day not having a thunderstorm is (31 - 8.7) / 31 = 0.7194 or 71.94% when rounded to the nearest hundredth of a percent. Choice A is the closest to this calculated value.

Compute Empirical Probability Solve the Problem. Round to the Nearest Hundredth of a Hundredth