2. Youbelievethat the mean annual kilowatt hour usage ofU.Sresidentialcustomers

Question

2.        Youbelievethat the mean annual kilowatt hour usage ofU.Sresidentialcustomers is less than

13,500- You find that a random sample of 35residentialcustomershas a mean kilowatt hour usage

Of 13,300 with a standard deviation of 315 kilowatthours.Youconduct a statistical experiment

Where HQ: p,^ 13,500 and Hg: p.< 13,500. At 01=0.01,decidewhether to reject or fail to reject the

Null hypothesis.

Choose from the following.

0" Fail to reject Ho because the standardized teststatisticisnot in the rejection region.

0 Reject Ho because the standardized test statistic isintherejection region.

0" Reject Ho because the standardized test statistic is notintherejection region. '

0 Fail to reject Ho because the standardizedteststatisticis in the rejection region.

2.        Youbelievethat the mean annual kilowatt hour usage ofU.Sresidentialcustomers is less than

13,500- You find that a random sample of 35residentialcustomershas a mean kilowatt hour usage

Of 13,300 with a standard deviation of 315 kilowatthours.Youconduct a statistical experiment

Where HQ: p,^ 13,500 and Hg: p.< 13,500. At 01=0.01,decidewhether to reject or fail to reject the

Null hypothesis.

Choose from the following.

0" Fail to reject Ho because the standardized teststatisticisnot in the rejection region.

0 Reject Ho because the standardized test statistic isintherejection region.

0" Reject Ho because the standardized test statistic is notintherejection region. '

0 Fail to reject Ho because the standardizedteststatisticis in the rejection region.

Explanation / Answer

Choose from the following.

0" Fail to reject Ho because the standardized test statistic isnot in the rejection region.

0 Reject Ho because the standardizedtest statistic is in the rejection region.

0" Reject Ho because the standardized test statistic is not inthe rejection region. '

0 Fail to reject Ho because the standardized test statisticis in the rejection region.

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