A player tosses 2 fair coins. He with Rs. 5 if 2 heads appear, Rs. 2 if 1 head appears and Rs. 1 if no head appear, then the variance of his winning amount is

Question

Aicharya · Accepted Answer

Variance $=\sum p_i x_i{ }^2-\left(\sum p_i x_i\right)^2$ $=\frac{17}{2}-\frac{25}{4}=\frac{9}{4}$

A player tosses 2 fair coins. He with Rs. 5 if 2 heads appear, Rs. 2 if 1 head appears and Rs. 1 if no head…

Solution