please answer parts A through D, please provide this information in a clear manner. thank you.

Assume the average selling price for houses in a certain county is $314,000 with a standard deviation of $26,000. a) Determine the coefficient of variation. b) Caculate the z-score for a house that sells for $329,000. c) Using the Empirical Rule, determine the range of prices that includes 95% of the homes around the mean. d) Using Chebychev's Theorem, determine the range of prices that includes at least 87% of the homes around the mean. a) Determine the coefficient of variation. CV = % (Round to one decimal place as needed.)