Question: 8.8.2 Assume that E ( X ) = 12, P ( X 2 14) = 0.12, and P ( X 5 10) = 0.18. Show

8.8.2 Assume that E ( X ) = 12, P ( X 2 14) = 0.12, and P ( X 5 10) = 0.18.

Show that the standard deviation of X is at least 1.2.

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