Construct a normal probability plot of the insulat- ing fluid breakdown time data in Exercise 6-8. Does it seem reasonable to assume that breakdown time is normally distributed? 6-8. In Applied Life Data Analysis (Wiley, 1982), Wayne Nel- son presents the breakdown time of an insulating fluid between electrodes at 34 kV. The times, in minutes, are as follows: 0.19, 0.78, 0.96, 1.25, 2.78, 3.16, 4.15, 5.07, 4.85, 6.50, 7.35, 8.01. 8.27, 12.06, 31.75, 32.52, 33.91, 36.71, and 72.89. Calculate the sample mean and sample standard deviation.
