Multiple Choice
A long-distance telephone company claims that the mean duration of long-distance telephone calls originating in one town was greater than 9.4 minutes, which is the average for the state. Determine the conclusion of the hypothesis test assuming that the results of the sampling do not lead to rejection of the null hypothesis.
A) Conclusion: Support the claim that the mean is less than 9.4 minutes.
B) Conclusion: Support the claim that the mean is greater than 9.4 minutes.
C) Conclusion: Support the claim that the mean is equal to 9.4 minutes.
D) Conclusion: Do not support the claim that the mean is greater than 9.4 minutes.
Correct Answer:

Verified
Correct Answer:
Verified
Q46: A health insurer has determined that the
Q47: A manufacturer wishes to test the claim
Q48: A nationwide study of American homeowners revealed
Q49: A study of a brand of
Q50: <span class="ql-formula" data-value=" \mathrm{H}_{\mathrm{a}}: \mu>19, \bar{x}=23.8, \sigma=8,
Q52: A cereal company claims that the mean
Q53: In 1990, the average math SAT
Q54: A consumer advocacy group claims that
Q55: A poll of 1068 adult Americans reveals
Q56: In the past, the mean running