A new medication has been created to treat osteo-arthritis inflammation and pain. Doctors prescribing the drug claim that the drug is not as effective for women as men since women taking the medication have higher pain levels than men. The pharmaceutical company conducts a clinical trial with 52 women and 47 men having osteo-arthritis in order to determine if women taking the drug have higher pain levels than men. After treatment, the 52 women have a mean pain level of 5.6 with a standard deviation of 1.2 while the 47 men have a mean pain level of 4.8 with a standard deviation of 1.5. Higher pain level measures indicate more inflammation and pain. Test the claim that women have higher pain levels than men when taking this drug to treat osteo-arthritis.
Does this confidence interval convince you that the mean pain level is higher for women than for men? Explain your answer.
A) No, since 0 is not in the interval and in fact the confidence interval shows all positive values, we conclude that the mean pain level is the same for women and men.
B) Yes, since 0 is not in the interval and in fact the confidence interval shows all positive values, we conclude that the mean pain level is is higher for women than for men.
C) No, since 0 is in the interval, we conclude that the mean pain level is the same for women and men.
D) Yes, since 0 is in the interval, we conclude that the mean pain level is higher for women than men.
7 answers