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## Statistics

Test the hypothesis for difference between two mean and find out the 99% confidence interval for two mean.

Hypersexual behaviour caused by traumatic brain injury (TBI) is often treated with drug Depo-Provera. In one clinical study, eight young male TBI patients who exhibited hypersexual behaviour were treated weekly with 400 mgs of Depo-Provera for six months. The testosterone levels [in ng/DL] prior to treatment and at the end of the 6-month treatment period are given in the table below.

 Patient Pre-Treatment After 6 months on Depo-Provera 1     2     3     4     5     6     7     8 849            903            890          1,092            362            900         1,006            672 96           41           31         124           46            53         113         174

a. find out a 99 percent confidence interval for the true mean difference between pre-treatment and after treatment testosterone levels of young male TBI patients.
b. Perform; using the usual 4 steps, a test of hypothesis to determine if the treatment by Depo-Provera is effective in reducing testosterone levels of young male TBI patients.  Utilize α = 0.5.

Statistics and Probability, Statistics

• Category:- Statistics and Probability
• Reference No.:- M921856

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