A glass manufacturer finds that 1 in every 1000 glass items produced is warped. Find the probability that (a) the first warped glass item is the 11th item produced, (b) the first warped item is the first, second, or third item produced, and (c) none of the first 10 glass items produced are defective.
A glass manufacturer finds that 1 in every 1000 glass items produced is warped. Find the probability that (a) the first warped glass item is the 11th item produced, (b) the first warped item is the first, second, or third item produced, and (c) none of the first 10 glass items produced are defective.
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 41E
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Question
A glass manufacturer finds that 1 in every
1000
glass items produced is warped. Find the probability that (a) the first warped glass item is the
11th item produced, (b) the first warped item is the first, second, or third item produced, and (c) none of the first 10 glass items produced are defective.
Expert Solution
Step 1
Given Information:
A glass manufacturer finds that 1 in every 1000 glass items produced is warped.
That is:
Geometric distribution is used when we are interested in the occurrence of the first success.
Formula:
In this case, we are interested in the first success (defective) and so, we use Geometric distribution.
(a) To find the probability that the first warped glass item is the 11th item produced:
Required probability:
Thus, probability that the first warped glass item is the 11th item produced is 0.00099
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