Question

For an outdoor concert by the city orchestra, concert organizers estimate that 12,000 people will attend if it is not raining. If it is raining, the concert organizers estimate that 400 people will attend. On the day of the concert, meteorologists predict a 80% chance of rain. Determine the expected number of people who will attend this concert.

Answer 1

2,720

Explanation:

P no rain = 1 - 0.8

= 0.2

= (0.2 x 12000) + (0.8 x 400)

= 2400 + 320

= 2720 people