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

1 answer:

4 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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