#6

6. The heights, in inches, of the starting players on a men's basketball team are in the following table Player A BCDE Height 76 78 78 81 86 a) Determine the population mean () b) Find the sample mean ( : the mean of the sample mean) of the variable xbar for a sample of size 2 c) Determine the population standard deviation d) Determine the standard deviation , of the variable xbar for the sample size of 2, indicate any apparent relationship between and e) Suppose that we obtained data by taking a random sample from a population and that you intend to find a confidence interval for the population mean . Which confidence level, 95% or 99% will result in confidence interval giving a more accurate estimate of ? Show all work how you got the result)