Unformatted text preview: . 034 Find E ( X ), V ar ( X ), σ , median, and mode. 31. Given S = { 2 , 4 , 6 , 8 , 10 , 12 } , A = { 2 , 6 , 12 } , B = { 8 , 10 , 12 } , C = { 2 , 4 , 6 , 8 , 10 } , ﬁnd the following: (a) A c ∩ B (b) A ∪ ( B ∩ C ) c (c) B ∩ ( A ∩ C ) 32. An account pays continously compounded interest at the rate of 3 . 6% per year. If the account has $4,500 in it after eight years, how much money was originally placed in the account? 33. If n ( A ∪ B ) = 80, n ( A ) = 30, and n ( B ) = 75, what is n ( A ∩ B c )? 7...
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 Fall '08
 JillZarestky
 Imperial units, United States customary units, $4,500, following probability distribution, $30

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