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Question 8 1 pt A team of health researchers wants to investigate whether having a regular lunch break improves the sleep of working adults. A group of 105 adults with full-time jobs were recruited for the study. They reported the average number of hours of sleep in the past week, committed to having a 1-hour out-of-office, work-free lunch break each day for 3 months, and, at the end of the study, reported the average number of hours of sleep in the past week. The mean difference in hours of sleep before and after the study was 2, with a standard deviation of 0.6. Which one of the following statements is INCORRECT? (Set the alpha level at 0.05.) The decision should be to reject the null hypothesis. The obtained test statistic is 3.416. The null hypothesis is that the hours of sleep remain the same before and after the study. The degrees of freedom are 104.

          Question 8
1 pt
A team of health researchers wants to investigate whether having a regular lunch break improves the sleep of working adults. A group of 105 adults with full-time jobs were recruited for the study. They reported the average number of hours of sleep in the past week, committed to having a 1-hour out-of-office, work-free lunch break each day for 3 months, and, at the end of the study, reported the average number of hours of sleep in the past week. The mean difference in hours of sleep before and after the study was 2, with a standard deviation of 0.6. Which one of the following statements is INCORRECT? (Set the alpha level at 0.05.)
The decision should be to reject the null hypothesis.
The obtained test statistic is 3.416.
The null hypothesis is that the hours of sleep remain the same before and after the study.
The degrees of freedom are 104.

Added by Kelsey P.

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