5. Given the following random sample of N = 15 observations that have been ordered from smallest to largest

14.3, 16.0, 17.3, 17.5, 17.8, 18.7, 18.8, 18.9,20.0,20.8,21.4,22.7,23.2,25.6,27.8

a. Determine the z-values and their standard normal quantiles.

b. Plot the observations versus the standard normal quantiles.

c. Interpret the plot relative to the form of distribution from which the observations were sampled.