Let x₁ and x₂ be 2 mutually independent discrete random variables. The first variable x₁ can be a whole number from 1 to 6. Its distribution function is m₁(i) =⁷⁻ⁱ⁄₂₁.The second variable x₂..
a) m₂(i) = ⁱ⁄₂₁
b) m₂(i) = ⁸⁻ⁱ⁄₂₁
c) m₂(i )=⁷⁺ⁱ⁄₂₁
d) m₂(i) = ¹⁴⁻ⁱ⁄₂₁