A community swim team has 160 members. Seventy of the members are advanced swimmers. Forty-eight of the members are intermediate swimmers. The remainder are novice swimmers. Fifty of the advanced swimmers practice four times a week. Thirty-eight of the intermediate swimmers practice four times a week. Twelve of the novice swimmers practice four times a week. Suppose one member of the swim team is chosen randomly.

(a) What is the probability that the member is a novice swimmer?

(b) What is the probability that the member practices four times a week?

(c) What is the probability that the member is an advanced swimmer and practices four times a week?

(d) What is the probability that a member is an advanced swimmer and an intermediate swimmer?

(e) Are being an advanced swimmer and an intermediate swimmer mutually exclusive?

(f) Why or why not? Explain.

Question

21 April, 12:23

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Answers (1)

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Robbins · Answer 1

A) 42/160

B) 100/160

C) 50/160

D) 0/160

E) yes

F) they are both distinguished groups established in the swim team