The mean of the population x1 , X2, ........, X10 is m. 10 10 Given that Xi =89 and (xi - m) 2 = 192.9, find i = 1 i = 1 (a) the value of the m; (Simplify your answer. Round to the nearest tenth as needed.) (b) the standard deviation of the population (Simplify your answer. Round to the nearest tenth as needed.)