The coefficient of variation of two distributions are ( 60 ) and ( 70 ). The standard deviation are ( 21 ) and ( 16 ) respectively, then their mean is

Step-by-step solution

Given that, C V_ x =60 (1) We know that, C V= 100 So, 21 x 100=60 = 2100 60 =35 Again, C V_ y =70 16 y 100=70 y = 1600 70 =22.86 So, mean of two means are x + y 2 35+22.86 2 =28.925