Question: A mathematician named Gosset used the following data set which gives additional sleep (in hours) obtained by a sample of 10 patients using a certain

A mathematician named Gosset used the following data set which gives additional sleep (in hours) obtained by a sample of 10 patients using a certain sleeping medicine. The data is

1.9 0.8 1.1 0.1 -0.1 4.4 5.5 1.6 4.6 3.4

Obtain a 90% confidence interval of the additional sleep that would be obtained by using the sleeping medicine.

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