Question: Student’s t-distribution. The following data set gives sleep in hours obtained by sample of 10 patients using drug:

1.9 0.8 1.1 0.1 -0.1

4.4 5.5 1.6 4.6 3.4

A. Find a 95% confidence interval for the additional sleep that would be obtained on average for all people using drug (Note: \(\bar{X}\) = 2.33 hr; s = 2.002 hrs. B. Was the drug effective in increasing sleep? Explain.