In a study of a new sleep medication, adults monitored the number of hours they slept one night without it and the next night after taking it. Results are summarized below. At a=0.05, test the claim that the mean difference is 0 hrs. Does the medication seem to be effective?

Without medication	5 7 9 7 3 5 6 6 5 5 4 4 6
With medication	5 6 7 8 6 5 7 5 6 6 5 3 4

Construct an appropriate confidence interval

Answer Key

H₀:____________H₁:_____________t=______________P-value=_______________________

Conclusion:________________________________________________________________________________________________________________________________________________________________________________________________________________________________

t_a/2=____________CI=( , ) Conclusion:________________________________

__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________