a)Suppose random variable X has variance 1, Y has variance 4 and the variance of X...

a)Suppose random variable X has variance 1, Y has variance 4 and the variance of X + Y is 6. Which one of the statements below is correct? Group of answer choices Random variables X and Y are positively correlated Random variables X and Y are not correlated Random variables X and Y are negatively correlated Random variables X and Y are independent

b)Suppose random variable X has variance 4, Y has variance 1 and the variance of X + Y is 5. Which one of the statements below is correct? Group of answer choices Random variables X and Y are positively correlated Random variables X and Y are independent. Random variables X and Y are negatively correlated Random variables X and Y are not correlated

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note: a correlation of zero doesnt imply that the variables are independent

orchestra answered 1 year ago

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