# Question: a researcher is interested in the impact of steriodson physical...

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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 . Conduct a t-test to examine if steroids had a statistically significant impact on the average time of 100 meters: and .State your conclusion and specify the significance.