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A researcher is interested in the impact of steriodson physical body strength. he conducted an experiment with 16 male runners. Prior to taking steriods, the average time for 100 meters was 13.12 seconds. After taking steroids, the average time became 12.64 seconds. The sample variance of time was S^2=1 . Conduct a t-test to examine if steroids had a statistically significant impact on the average time of 100 meters: H_0:mu =13.12 and H1 : μ 13.12 .State your conclusion and specify the significance.

math   Statistics-And-Probability   
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solution Ceiven the ifoDaton ime-3 12 Seconds amale avenage times 12-64 52ronds 2 elaim paina tetaking steaiods o test the the ayers ate time for loometeas aas )2-12- setends hie feke the test Salishc to test +the byepthrss 284-12 /2 Decision using et caltrcol octhdl Re sta we att eet Ho at 5% level of syni ficante conclusion we say that叶heio is suffi. ( ie evidenre the avesafe tjoe for noeas was 13.12 seron

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