Bill estimates that 20 people will attend the seminar if it does not rain and 12 people will attend if it rains. The weather for

Question

3 years ago

15

Bill estimates that 20 people will attend the seminar if it does not rain and 12 people will attend if it rains. The weather for

ecast indicates a 40% chance it will not rain and a 60% chance it will rain on the day of the seminar. Determine the expected number of people who will attend the seminar.

Mathematics

2 answers:

ale4655 [162] · Answer 1 · 2022-09-22T04:43:00+03:00

ale4655 [162]3 years ago

8 0

12 people will attend

KonstantinChe [14] · Answer 2 · 2022-09-22T06:17:11+03:00

KonstantinChe [14]3 years ago

8 0

$E(X)=20\times0.4+12\times0.6=15.2$
The answer is 15.2 people.