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A researcher is collecting data about the NFL and concussions from head injuries. If the researcher wants to estimate the mean number of days that

A researcher is collecting data about the NFL and concussions from head injuries. If the researcher wants to estimate the mean number of days that players should take off from playing in order to recover with 99% confidence, then find the minimum sample size of NFL football players that need to be included in the study within day of the mean. Assume the population standard deviation is 1.5. Use the formula and show all work.

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