Help with question 23

Sd Sd Construct a 90% confidence interval, using the inequality d - ton

Sd Sd Construct a 90% confidence interval, using the inequality - tc < < a + tc To test the effectiveness of a new drug that is reported to increase the number of hours of sleep patients get during the night. researchers randomly select 13 patients and record the number of hours of sleep each gets with and without the new drug Patient 2 1 12 13 Sleep using drug 50 51 60 32 53 52 56 52 42 32 55 51 30 Calculate d for each patient by subtracting the number of hours of sleep with the drug from the number without the drug The confidence interval is "d < [C] (Type an integer or a decimal Round to two decimal places as needed )