Question: A simple random sample of size n = 5 is obtained from the population of drivers living in New York City, and the braking reaction

A simple random sample of size n = 5 is obtained from the population of drivers living in New York City, and the braking reaction time of each driver is measured. The results are to be used for constructing a 95% confidence interval. What is the number of degrees of freedom that should be used for finding the critcal value t_α/2? Give a brief explanation of the number of degrees of freedom.

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