A computer shop sells three different brands of computers. Of its computers sales, 50% are brand 1, 30% brand 2, and 20% brand 3. Each manufacturer offers a 1-yea. that 25% of brand l's computers require warranty repair work, and 20%, 10% for brands 2, 3 respectively. a. What is the probability that a randomly selected purchaser has a computer that will need repair while under warranty? b. If a customer returns to the store with a computer that needs warranty repair work, what is the probability that it is a brand 1 computer?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A computer shop sells three different brands of computers. Of its computers sales, 50% are brand 1, 30% brand 2, and 20% brand 3. Each manufacturer offers a 1-year warranty on repair work. It is known
that 25% of brand l's computers require warranty repair work, and 20%, 10% for brands 2, 3 respectively.
a. What is the probability that a randomly selected purchaser has a computer that will need repair while under warranty?
b. If a customer returns to the store with a computer that needs warranty repair work, what is the probability that it is a brand 1 computer?
Transcribed Image Text:6 points Save Answer A computer shop sells three different brands of computers. Of its computers sales, 50% are brand 1, 30% brand 2, and 20% brand 3. Each manufacturer offers a 1-year warranty on repair work. It is known that 25% of brand l's computers require warranty repair work, and 20%, 10% for brands 2, 3 respectively. a. What is the probability that a randomly selected purchaser has a computer that will need repair while under warranty? b. If a customer returns to the store with a computer that needs warranty repair work, what is the probability that it is a brand 1 computer?
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