A real estate company is interested in the ages of home buyers

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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 45 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 buyers.

 

(a) According to Chebyshev's theorem, at least 36% of the home buyers' ages lie between 

______ years and ______years. (Round your answer to the nearest whole number.)

 

(b) According to Chebyshev's theorem, at least ? _______% of the home buyers' ages lie between 25 years and 65 years.