1 Point 45 People Are Randomly Selected And The Accuracy Of Their Wristwatches Is Checked With Positive Errors Repres 1 (28.02 KiB) Viewed 83 times
(1 point) 45 people are randomly selected and the accuracy of their wristwatches is checked, with positive errors representing watches that are ahead of the correct time and negative errors representing watches that are behind the correct time. The 45 values have a mean of 106sec and a standard deviation of 158 sec. Use a 0.01 significance level to test the claim that the population of all watches has a mean of Osec. The test statistic is The P-Value is 0.00065 The final conclustion is A. There is sufficient evidence to warrant rejection of the claim that the mean is equal to 0 B. There is not sufficient evidence to warrant rejection of the claim that the mean is equal to 0
(1 point) 35 people are randomly selected and the accuracy of their wristwatches is checked with positive errors representing watches that are ahead of the correct time and negative errors representing watches that are behind the correct time. The 35 values have a mean of 115 sec and a standard deviation of 216sec. Use a 0.02 significance level to test the claim that the population of all watches has a mean of Osec. The test statistic is 2.699 The P-value is 0.0004 The final conclustion is A. There is sufficient evidence to warrant rejection of the claim that the mean is equal to 0 B. There is not sufficient evidence to warrant rejection of the claim that the mean is equal to o
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