Product reliability the estimated probability that a


Question: PRODUCT RELIABILITY The estimated probability that a brand-A, a brand-B, and a brand-C plasma TV will last at least 30,000 hr is .90, .85, and .80, respectively. Of the 4500 plasma TVs that Ace TV sold in a certain year, 1000 were brand A, 1500 were brand B, and 2000 were brand C. If a plasma TV set sold by Ace TV that year is selected at random and is still working after 30,000 hr of use

a. What is the probability that it was a brand-A TV?

b. What is the probability that it was not a brand-A TV?

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Basic Statistics: Product reliability the estimated probability that a
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