ment: 3.3 Practice (Practice) ons Exercise 03.39 (Measures of Distribution Shape. Relative Location, and Detecting Outliers) The results of a national survey showed that on average, adults sleep 6.9 hours per night. Suppose that the standard deviation is 1.2 hours. Round your answers to the nearest whole number: a. Use Chebyshev's theorem to calculate the percentage of individuals who sleep between 4.5 and 9.3 hours. At least % b. Use Chebyshev's theorem to calculate the percentage of individuals who sleep between 3.9 and 9.9 hours. At least % c. Assume that the number of hours of sleep follows a bell-shaped distribution. Use the empirical rule to calculate the percentage of individuals who sleep between 4.5 and 9.3 hours per day. At least % How does this result compare to the value that you obtained using Chebyshev's theorem in part (a)? The empirical rule produces a larger percentage than Chebyshev's theorem. V Side Feedhack Partially Correct Hinta che