Eyeglassomatic manufactures eyeglasses for different retailers. The number of days it takes to fix defects in an eyeglass and the probability that it will take that number of days are in the table. (a)Find the probability that a lens will take at least 16 days to make a fix the defect. (b) Find the probability that the lens will take 3 to 5 days or 7 to 9 days * Number of days 1 Probabilities 24.9% 10.8% 3 9.1% 4 12.3% 13.3% 6 11.4% 7 7.0% 4.6% 1.9% 8 9 10 1.3% 11 1.0% 12 0.8% 13 0.6% 0.4% 14 15 0.2% 16 0.2% 17 0.1% 18 0.1%

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Eyeglassomatic manufactures eyeglasses for different retailers. The
number of days it takes to fix defects in an eyeglass and the probability
that it will take that number of days are in the table. (a)Find the
probability that a lens will take at least 16 days to make a fix the defect.
(b) Find the probability that the lens will take 3 to 5 days or 7 to 9 days *
Number of days
Probabilities
1
24.9%
2
10.8%
3
9.1%
4
12.3%
5
13.3%
11.4%
7
7.0%
8
4.6%
9
1.9%
10
1.3%
11
1.0%
12
0.8%
13
0.6%
14
0.4%
15
0.2%
16
0.2%
0.1%
17
18
0.1%
Transcribed Image Text:Eyeglassomatic manufactures eyeglasses for different retailers. The number of days it takes to fix defects in an eyeglass and the probability that it will take that number of days are in the table. (a)Find the probability that a lens will take at least 16 days to make a fix the defect. (b) Find the probability that the lens will take 3 to 5 days or 7 to 9 days * Number of days Probabilities 1 24.9% 2 10.8% 3 9.1% 4 12.3% 5 13.3% 11.4% 7 7.0% 8 4.6% 9 1.9% 10 1.3% 11 1.0% 12 0.8% 13 0.6% 14 0.4% 15 0.2% 16 0.2% 0.1% 17 18 0.1%
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