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a scratch off lottery ticket has several possible prizes. there is a 0.000005 probability of winning...

a scratch off lottery ticket has several possible prizes. there is a 0.000005 probability of winning $50000. there is a 0.00004 probability of winning $10000. there is a 0.0003 probability of winning $2000, a 0.002 probability of winning 150. each ticket costs $4, find the expected value of buying 1 ticket.

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