Probability....pls help

cha87

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Mar 6, 2009
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monthly sales subsidiary A subsidiary B (Months) (Months) under 20000 4 8 20000-30000 7 13 30000-40000 10 16 40000-50000 19 13 50000-60000 10 8 over 60000 10 2 1. what is the probability that,in any given month,both subsidiary A and Subsidiary B would have sales over 40000? show the calculations 2. what is the probability that,in any given month,subsidiary A would have sales in either the under 30000 or the over 60000 range? show the calculations. Can anybody help me with this????????????????