Let three random variables X, Y and Z be given 𝐸(𝑋) = 4, 𝐸(𝑌) = 1, 𝐸(𝑍)

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answerhappygod
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Let three random variables X, Y and Z be given 𝐸(𝑋) = 4, 𝐸(𝑌) = 1, 𝐸(𝑍)

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Let three random variables X, Y and Z be given
𝐸(𝑋) = 4, 𝐸(π‘Œ) = 1, 𝐸(𝑍) = 1,π‘‰π‘Žπ‘Ÿ(𝑋) = 4, 𝐸(π‘Œ2) = 3, πΆπ‘œπ‘£(𝑋, π‘Œ) =
1.
Item68 π‘‰π‘Žπ‘Ÿ(𝑋+2𝑍)βˆ’πΈ(2π‘‹π‘Œ)+𝐸(1βˆ’2π‘Œ+𝑍)<10, true or false
Item 69 0.3 < πΆπ‘œπ‘Ÿπ‘Ÿ(3𝑋, 3π‘Œ) > 0.4. Β Β true or
false
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