Let X={x∈N:1≤x≤17} and Y={ax+b:x∈X and a,b∈R,a>0}. If mean a – InterviewSolution

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1.	Let X={x∈N:1≤x≤17} and Y={ax+b:x∈X and a,b∈R,a>0}. If mean and variance of elements of Y are 17 and 216 respectively then a+b is equal to:
Answer» Let $X = {x \in N : 1 \leq x \leq 17}$ and $Y = {a x + b : x \in X and a, b \in R, a > 0}$ . If mean and variance of elements of $Y$ are $17$ and $216$ respectively then $a + b$ is equal to:

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