Question

In a random sample of 643 males, 210 of them have been assigned to receive a testosterone supplement designed to help men lose weight. Both groups were then assigned the same regular exercise routine and diets over an 8-week observation period. After 8 weeks, the 210 males receiving the supplement had lost on average 11.2 lbs with standard deviation equal to 6.1 lbs, while the 433 individuals not receiving the supplement lost on average 6.6 lbs with standard deviation equal to 4.1 lbs.

Develop a statistical test to determine whether or not the supplement will help males lose weight then address this hypothesis using your test.

Answer 1