Question

A travel website reports that in a particular city, the probability of rain on any day in April is 40%. What is the expected number of rainy days in this city during the month of April?

Answer 1

There are 30 days in April. To solve this question, we simply multiply the days by the rate:
0.4(30)
(0.4 represents 40%)
Multiply:
0.4(30) = 12
The expected amount of rainy days is 12 days.