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( .9 * .72 * .373 + .1 * .72 * .39 + .9 * .64 * .296 + .1 * .64 * .314)/2
( .9 * .72 * .373 + .1 * .72 * .39 + .9 * .64 * .296 + .1 * .64 * .314)/2
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