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 47 years old, with a standard deviation of 10
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

(a) According to Chebyshev's theorem, at least 36%, 56%, 75%, 84%, 89% of the home buyers' ages lie between 27 and 47 years old
(b) According to Chebyshev's theorem, at least 56% of the home buyers' ages lie between years and years (Round to the nearest whole number.)