Problem 3

How Teenagers Listen to Music. For its Music 360 survey,

Nielsen Co. asked teenagers and adults how each group has listened

to music in the past 12 months. Nearly two-thirds of U.S. teenagers

under the age of 18 say they use Google Inc.'s video-sharing site to

listen to music and 35% of the teenagers said they use Pandora Media

Inc.'s custom online radio service (TheWall Street Journal). Suppose

10 teenagers are selected randomly to be interviewed about how they

listen to music.

-Is randomly selecting 10 teenagers and asking whether or not

they use Pandora Media Inc.'s online service a binomial experi-

ment? build f(x)?

-What is the probability that none of the 10 teenagers uses Pan-

dora Media Inc.'s online radio service?

-What is the probability that 4 of the 10 teenagers use Pandora

Media Inc.'s online radio service?

-What is the probability that at least 2 of the 10 teenagers use

Pandora Media Inc.'s online radio service?