Question

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? round to two decimal places, if necessary.

Answer 1

Solution: We are given that in Jacksonville Florida, on average, 8.7 days have afternoon thunderstorms.

We know that there are 31 days in the month of July.

Therefore, the probability of afternoon thunderstorms on a randomly selected day in July month is:

P(thunderstorm) =
`(8.7)/(31)=0.2806`

We have to find the probability that a randomly selected day in July will not have a thunderstorm.

P(no thunderstorm) = 1 - P(thunderstorm)

`=1-0.2806`

`=0.72`

Therefore, the probability that a randomly selected day in July will not have a thunderstorm is 0.72