Question

Q1. There are 53 people in the band boosters are your child’s school. A president, secretary and treasurer must be chose from the group. How many different ways could a president, secretary and treasurer be chosen?

Q2. . You are in charge of a charity event. Based on previous years data, if the day is sunny, 12,000 people will attend the event. If the day is cloudy, only 9,000 people will attend. If it rains, only 1300 people will attend. The local meteorologist states that the probability of a sunny day is 0.4, of a cloudy day is 0.48, and of a rainy day is 0.12. Determine the number of people expected to attend.

(Please help me with both as soon as possible please)

Answer 1

TOPIC: Q1--Permutation and combination.

Q2-- Expectation of random variables.