A real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found that the mean age was 41 years old, with a standard deviation of 11 years. Suppose that these measures are valid for the population of all home buyers. Complete the following statements about the distribution of all ages of home buyers. (a) According to Chebyshey's theorem, at least of the X a home buyers' ages lie between 19 years and 63 years. (b) According to Chebyshev's theorem, at least 84% of the home buyers' ages lie between years and I: years. (Round your answer to the nearest whole number.)