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A survey of teenagers found the music preferences listed. If you pick a teenager at random, what is P(rock)?

Country : 12

Jazz : 5

Rock : 7

Classical : 6

New Age : 6

Other : 4

A.33/40

B.1/7

C.7/40

D.1

Verified Answer :

HomertheGenius

We can see from this survey that 7 teenagers prefer rock and roll.
        The number of all teenagers in the survey is:
        12 + 5 + 7 + 6 + 6 + 4 = 40
        P ( rock ) = 7 / 40
        Answer: C ) 7 / 40

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