Question: Calculate the required sample size for 80% statistical power to replicate the 100m sprint study in a new random sample. Assume the study hypothesises that

Calculate the required sample size for 80% statistical power to replicate the 100m sprint study in a new random sample. Assume the study hypothesises that the average 100m running time is actually 13.5 seconds. The researcher will use a two-sided alternative hypothesis and the 0.05 level of significance. Assume that the 100m running time is normally distributed in the population and the population standard deviation is known to be 1.5 seconds. How many samples are required?

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