(Answered) An mp3 manufacturer claims that 65 of teenagers 13 to 16

Statistics

An MP3 manufacturer claims that 65% of teenagers 13 to 16 years old have their own MP3 player. A researcher wishes to test the claim and selects a random sample of 80 teenagers. She finds that 57 have their own MP3 players. At a=0.05, should the claim be rejected?

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