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Solution: Perform each of the following steps.a. State the
Chapter 8, Problem 12RE(choose chapter or problem)
Problem 12RE
Perform each of the following steps.
a. State the hypotheses and identify the claim.
b. Find the critical value(s).
c. Compute the test value.
d. Make the decision.
e. Summarize the results.
Use the traditional method of hypothesis testing unless otherwise specified.
MP3 Ownership 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 α = 0.05, should the claim be rejected? Use the P-value method. (8–4)
Questions & Answers
QUESTION:
Problem 12RE
Perform each of the following steps.
a. State the hypotheses and identify the claim.
b. Find the critical value(s).
c. Compute the test value.
d. Make the decision.
e. Summarize the results.
Use the traditional method of hypothesis testing unless otherwise specified.
MP3 Ownership 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 α = 0.05, should the claim be rejected? Use the P-value method. (8–4)
ANSWER:
Solution:
Step 1 of 6:
It is given that an MP3 player manufacturer claims that 65% of the teanagers have their own MP3 player. To test this a sample of 80 teanagers are selected and it is found that 57 teanagers have their own MP3 player.
The claim is to be tested at =0.05 using P-value method.
Using this we need to answer the given question.