Suppose your ﬁnancial advisor recommends three stocks to you. He claims the likelihood that the ﬁrst stock will increase in value at least 10% within the next year is 0.7, the likelihood the second stock will increase in value at least 10% within the next year is 0.55, and the likelihood the third stock will increase at least 10% within the next year is 0.20. Would it be unusual for all three stocks to increase at least 10%, assuming the stocks behave independently of each other?
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