(i) of high quality; (ii) of medium quality; (iii) of low quality?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.8: Probabilities Of Disjoint And Overlapping Events
Problem 2C
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The stock of a warehouse consists of boxes of high, medium and low quality lightbulbs in
respective proportions 1:2:2. The probabilities of bulbs of the three types being unsatisfactory
are 0-0, 0-1 and 0-2 respectively. If a box is chosen at random and two bulbs in it are tested
and found to be satisfactory, what is the probability that it contains bulbs
(i) of high quality;
(ii) of medium quality;
(iii) of low quality?
Transcribed Image Text:The stock of a warehouse consists of boxes of high, medium and low quality lightbulbs in respective proportions 1:2:2. The probabilities of bulbs of the three types being unsatisfactory are 0-0, 0-1 and 0-2 respectively. If a box is chosen at random and two bulbs in it are tested and found to be satisfactory, what is the probability that it contains bulbs (i) of high quality; (ii) of medium quality; (iii) of low quality?
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