Mathematics, 28.05.2021 14:10 pr4ever
A study is to be made of the relative effectiveness of two kinds of cough medicines designed to increase sleep for people with colds. Six people with colds are given medicine A the first night and medicine Bthe second night. Their hours of sleep each night are recorded
SUBJECT
1 2 3 4 5 6
Medicine A 4.8 4.1 5.8 4.9 5.3 7.4
Medicine B 3.9 4.2 5.0 4.9 5.4 7.1
a.) At Ξ±= .05, test if there is a difference between the mean hours of sleep for the 2 medicines.
b.) Establish a 95% confidence interval for the mean difference between the hours of sleep for the 2 medicines.
c.) How and what would you randomize in this study? Briefly explain your reason for randomization.
Answers: 2
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