[F]The following population of N=4 values is to be sampled by using a sample size of n=2: 3, 7,6,9.
a. If sampling is done without replacement, how many different samples could be obtained?
b. Determine the value of X for each of the samples.
c. Find the sampling distribution of X and graph the results.
3. Determine the mean of the population. Compare the population mean to the sample means. What is the probability of selecting a sample that provides an exact estimate of the population mean?