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26 March, 23:18

King mattress purchases sleep-n-air mattresses from three different distributors. the probability of getting a defective mattress from distributor a, b, or c is 0.18, 0.12, and 0.54, respectively. assume an equal probability of making a purchase from each distributor a, b, or

c. if king mattress sells a defective mattress, what is the probability that it came from distributor a?

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  1. 26 March, 23:56
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    0.18 / (0.18 + 0.12 + 0.54) =

    0.18 / 0.84 =

    0.2143 <=
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