Question

35) A family is planning an annual picnic in Arizona. Rain is forecast for 45 days of the year, but when

rain is forecast, the prediction is correct only 90% of the time. What is the probability that it will rain on
the day of the picnic? Note that it is not a leap year.

Answer 1

81/730

Explanation:

The chance of picking a day forecasted to have no rain is 45/365.

There is a 90% chance it actually rains on this day, so the probability is

`(45/365)(0.9)=81/730`