Question

A high school club has 10 members who are seniors and 8 members who

are juniors. If a member is randomly selected to be the club president,
what is the probability that the person will NOT be a senior?

Answer 1

The probability that the person will not be a senior

P(E⁻) = 1 - P(E)

=
`1- (5)/(9) = (4)/(9)`

Explanation:

Explanation:-

Given A high school club has 10 members who are seniors and 8 members who are juniors

n(S) = 10 + 8 = 18

If a member is randomly selected to be the club president

Let 'E' be the event that the person will be a senior

The probability that the person will be a senior

`P(E) = (n(E))/(n(S))`

`P(E) = (n(E))/(n(S)) = (10)/(18) = (5)/(9)`

The probability that the person will not be a senior

P(E⁻) = 1 - P(E)

=
`1- (5)/(9) = (4)/(9)`