Question: Make a decision about the given claim. Use only the rare eventrule, and make subjective estimates to determine whether events are likely. Forexample, if the

Make a decision about the given claim. Use only the rare eventrule, and make subjective estimates to determine whether events are likely. Forexample, if the claim is that a coin favors heads and sample results consist of 11 heads in 20flips, conclude that there is not sufficient evidence to support the claim that the coin favors heads(because it is easy to get 11 heads in 20 flips by chance with a faircoin).

Claim: The mean pulserate(inbeatsperminute) of students in a large math class is less than 98. A simple random sample of the students has a mean pulserate of 66.3.

Choose the correct answer below.

A.

The sample isnot unusual if the claim is true. The sample is unusual if the claim is false.Therefore, there isnot sufficient evidence to support the claim.

B.

The sample isnot unusual if the claim is true. The sample is unusual if the claim is false.Therefore, there is sufficient evidence to support the claim.

C.

The sample is unusual if the claim is true. The sample isnot unusual if the claim is false.Therefore, there isnot sufficient evidence to support the claim.

D.

The sample is unusual if the claim is true. The sample isnot unusual if the claim is false.Therefore, there is sufficient evidence to support the claim.

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