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(a) If widgets are selected at random, what is the probability that the first one from supplier B occurs on the third selection?

(a) If widgets are selected at random, what is the probability that the first one from supplier B occurs on the third selection?

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
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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22. Consider the same scenario as in #19 and #21, where 20 percent of the widgets come from supplier B. (a) If widgets are selected at random, what is the probability that the first one from supplier B occurs on the third selection? (b) If widgets are selected at random, what is the probability that at least 3 must be selected until getting the first one from supplier B? (c) What is the expected number of widgets that would need to be selected before getting the first one from supplier B?
Transcribed Image Text:22. Consider the same scenario as in #19 and #21, where 20 percent of the widgets come from supplier B. (a) If widgets are selected at random, what is the probability that the first one from supplier B occurs on the third selection? (b) If widgets are selected at random, what is the probability that at least 3 must be selected until getting the first one from supplier B? (c) What is the expected number of widgets that would need to be selected before getting the first one from supplier B?
A company gets 5% of its widgets from supplier A, 20% from supplier B, 30% from supplier C and 45% from supplier D. The percentage of widgets from suppliers A, B, C and D that are defective is 30, 10, 5 and 2, respectively. (By the way, LO 21 and LO 22 will also use this initial set up).
Transcribed Image Text:A company gets 5% of its widgets from supplier A, 20% from supplier B, 30% from supplier C and 45% from supplier D. The percentage of widgets from suppliers A, B, C and D that are defective is 30, 10, 5 and 2, respectively. (By the way, LO 21 and LO 22 will also use this initial set up).
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