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26 February, 15:56

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

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Answers (1)
  1. 26 February, 16:12
    0
    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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