Question

Asked Nov 22, 2019

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mp3 ownership- an mp3 manufacturer claims that 65% of teenagers 13 to 16 years old have their own mp3 players. a researcher wishes to test 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 ? use the *P-value* method.

PLEASE EXPLAIN STEP BY STEP

Step 1

It is given that 65% of teenagers have their own mp3players. a researcher wants to test claim and selects a random sample of 80 teenagers. She finds that 57 have their own mp3 players.

Step 2

The sample proportion can be calculated as follows:

Thus, the sample proportion is 0.71.

Step 3

The null and alternative hypotheses are stated below:

Null hypothesis: The proportion of teenagers has their own mp3 players is eq...

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