7) You wish to explore whether vigorous exercise changes testosterone levels. You obtain a random sample of males, and measure their testosterone levels. You then put them on an excerise program for 2 weeks and measure their testerosterone again. Conduct the appropriate statistical test of the data (measures are in ng/dL). (5 marks) Individual Initial testosterone Final testosterone 260 280 400 400 450 480 NOUAWNH 300 290 510 520 500 490 700 705 Ho: Ha