Question: Let X be any real-valued random variable. (a) Does ELX2] (EX]) always hold? (b) When is the equality achieved Let X be any real-valued random

Let X be any real-valued random variable. (a) IE[X2] always hold? (b)

When is the equality achieved?

Let X be any real-valued random variable. (a) Does ELX2] (EX]) always hold? (b) When is the equality achieved

Let X be any real-valued random variable. (a) IE[X2] always hold? (b) When is the equality achieved?

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