A simple random sample size of n5 is obtained from the popul

A simple random sample size of 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 critical value t (sub alpha/2)? give a brief explanation of the number of degrees of freedom (in your own words).

Solution

Critical Value
The Value of |t | with n-1 = 4 d.f, at 95% confidence level is 2.776