A new medicine is said to help improve sleep. Eight participants are picked at random and given the medicine. The means hours slept for each person were recorded before starting the medication and after. Mean Hours SleptParticipant Before MedicineAfter Medicine157266347456568669737848 What statistical test is appropriate? Group of answer choices Single sample z test Single sample t test Pairs sample t test independent t test
Added by Timothy P.
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In this scenario, we have two sets of data: the hours slept by each participant before taking the medicine and the hours slept after taking the medicine. Since the same participants are measured before and after the treatment, this is a paired design. Show more…
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A new medicine is said to help improve sleep. Eight subjects were picked at random and given the medicine. The mean hours slept for each person were recorded before starting the medication and after.
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A study is to be made of the relative effectiveness of two kinds of cough medicines in increasing sleep. Six people with colds are given medicine A the first night and medicine B the second night. Their hours of sleep each night are recorded. The data are: The sleeping hours for people who took medicine A are 4.8, 4.1, 5.8, 4.9, 5.3, and 7.4. The sleeping hours for the same people who took medicine B are 3.9, 4.2, 5, 4.9, 5.4, and 7.1. To test whether the data indicate a significant difference in effectiveness of the two medicines, the appropriate test to use is: a. Paired t-test b. None c. Two independent samples t-test d. One sample z-test
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