QUESTION 21 A magazine article cliams that the mean time of evening long-distance calls is less than 15.2 minutes per call. A researcher wished to test the claim and selected a random sample of 36 calls. She found that the mean time was 14.7 minutes and standard deviation was 5 minutes. Using a 0.05 level of significance, is there sufficient evidence to support the claim? Op-value=0.274, there is not enough evidence to support the claim. Op-value=0.037, there is not enough evidence to support the claim. Op-value=0.037, there is enough evidence to support the claim. Op-value=0.274, there is enough evidence to support the claim.

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QUESTION 21
A magazine article cliams that the mean time of evening long-distance calls is less than 15.2 minutes per call. A researcher wished to test the claim and
selected a random sample of 36 calls. She found that the mean time was 14.7 minutes and standard deviation was 5 minutes. Using a 0.05 level of
significance, is there sufficient evidence to support the claim?
Op-value=0.274, there is not enough evidence to support the claim.
Op-value=0.037, there is not enough evidence to support the claim.
Op-value=0.037, there is enough evidence to support the claim.
Op-value=0.274, there is enough evidence to support the claim.
Transcribed Image Text:QUESTION 21 A magazine article cliams that the mean time of evening long-distance calls is less than 15.2 minutes per call. A researcher wished to test the claim and selected a random sample of 36 calls. She found that the mean time was 14.7 minutes and standard deviation was 5 minutes. Using a 0.05 level of significance, is there sufficient evidence to support the claim? Op-value=0.274, there is not enough evidence to support the claim. Op-value=0.037, there is not enough evidence to support the claim. Op-value=0.037, there is enough evidence to support the claim. Op-value=0.274, there is enough evidence to support the claim.
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