Hypersexual behavior caused by traumatic brain injury (TBI) is often treated wit

Question

Hypersexual behavior caused by traumatic brain injury (TBI) is often treated with the drug Depo-Provera. In one clinical study, 4 young male TBI patients who exhibited hypersexual behavior were treated weekly with 400 milligrams of Depo-Provera for six months. The testosterone levels of the patients both prior to treatment and at the end of the six month treatment period are given below: pre-treat post-treat 535.8 538.1 543.7 547.6 1378.6 1337.7 1368.6 1365 Construct a 90% confidence interval for the true mean difference (pre-post) between the pre-treatment and post- treatment testosterone levels of young male TBI patients. Round your final answer to one decimal place. to

Explanation / Answer

The statistical software output for this problem is:

Paired T confidence interval:
D = 1 - 2 : Mean of the difference between Pre - Treat and Post - Treat
90% confidence interval results:

Hence,

90% confidence interval will be:

800.1 to 842.2

Difference Mean Std. Err. DF L. Limit U. Limit Pre - Treat - Post - Treat 821.175 8.9500815 3 800.11221 842.23779

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