Question 1203813
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P(first urn selected and ball is white) = (0.8)(4/10) = (0.8)(0.4) = 0.32<br>
P(second urn selected and ball is white) - (0.2)(6/10) =(0.2)(0.6) = 0.12<br>
P(ball is white) = 0.32+0.12 = 0.44<br>
P(ball is white, given that it came from second urn) = 0.12/0.44 = 12/44 = 3/11<br>
ANSWER: 3/11<br>
Convert to decimal or percentage if required....<br>