Let _ i=1 ^9 x_i^2=855 . If M is the mean and is the standard deviation of x₁, x₂, . . x₉ , then what is the value of M ^2+ ^2 ?

Step-by-step solution

Given that _ i =1 ^9 x ₁ ^2=855 We know that variance (6^2 )= _ i=1 ^9 x₁ ^2 ~N -( Mean )^2 aligned & 6^2= 855 9 - M ^2 & 6^2+ M ^2= 855 9 =95 aligned