Question

For an outdoor concert by the city​ orchestra, concert organizers estimate that 19 comma 000 people will attend if it is not raining. If it is​ raining, concert organizers estimate that 4000 people will attend. On the day of the​ concert, meteorologists predict a 90​% chance of rain. Determine the expected number of people who will attend this concert.

Answer 1

The expected number of people who will attend this concert = 2260

Explanation:

The concert organizers estimate people will attend if it is not raining = 19000

If its raining people will attend = 4000

On the day of the​ concert, meteorologists predict a 90​% chance of rain.

This means 10 % chance of not raining

The expected number of people = 90% (4000) + 10% (19000)

= 360 + 1900

= 2260

The expected number of people who will attend this concert = 2260