a. Find the mean and standard deviation of the sanitation scores.
b. Calculate the intervals  ± s,  ± 2s,  ± 3s.
c. Find the percentage of measurements in the data set that fall within each of the intervals, part b. Do these percentages agree with Chebyshev's Rule? The Empirical Rule?
For Information: Refer to the Centers for Disease Control and Prevention listing of the Jan. 2010 sanitation scores for 186 cruise ships, Exercise 2.24 (p. 59).