2.4-1. An urn contains seven red and 11 white balls. Draw one ball at random from the urn. Let X = 1 if a red ball is drawn, and let X = 0 if a white ball is drawn. Give the pmf, mean, and variance of X.

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**Problem 2.4-1:**

An urn contains seven red and 11 white balls. Draw one ball at random from the urn. Let \( X = 1 \) if a red ball is drawn, and let \( X = 0 \) if a white ball is drawn. Give the pmf, mean, and variance of \( X \).
Transcribed Image Text:**Problem 2.4-1:** An urn contains seven red and 11 white balls. Draw one ball at random from the urn. Let \( X = 1 \) if a red ball is drawn, and let \( X = 0 \) if a white ball is drawn. Give the pmf, mean, and variance of \( X \).
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