A company manufactures eyeglasses for different retailers. In March 2010, they tested to see how manydefective lenses they made, and there were 17.5% defective lenses due to scratches. Suppose the compaexamined twenty-one eyeglasses.State the random variable.The number of lenses that were scratched.O The type of defect.The number of defective lenses.Round your answers to four decimal places, if necessary.Find the probability thatNone are scratched.P(x = 0) =All are scratched.P(x = 21) =At most eleven are scratched.P(x < 13) =At least thirteen are scratched.P(x > 5) =Is it unusual for at least thirteen lenses to be scratched?No, because the probability is less than 0.05.Yes, because the probability is at least 0.05.O No, because the probability isleast 0.05.Yes, because the probability is less than 0.05.

The random variable is the number of lenses that were scratched. Here, n=21 and p=0.175.

A company manufactures eyeglasses for different retailers. In March 2010, they tested to see how many defective lenses they made, and there were 17.5% defective lenses due to scratches. Suppose the compa examined twenty-one eyeglasses.

A company manufactures eyeglasses for different retailers. In March 2010, they tested to see how many defective lenses they made, and there were 17.5% defective lenses due to scratches. Suppose the compa examined twenty-one eyeglasses.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A company manufactures eyeglasses for different retailers. In March 2010, they tested to see how many
defective lenses they made, and there were 17.5% defective lenses due to scratches. Suppose the compa
examined twenty-one eyeglasses.
State the random variable.
The number of lenses that were scratched.
O The type of defect.
The number of defective lenses.
Round your answers to four decimal places, if necessary.
Find the probability that
None are scratched.
P(x = 0) =
All are scratched.
P(x = 21) =
At most eleven are scratched.
P(x < 13) =
At least thirteen are scratched.
P(x > 5) =
Is it unusual for at least thirteen lenses to be scratched?
No, because the probability is less than 0.05.
Yes, because the probability is at least 0.05.
O No, because the probability is
least 0.05.
Yes, because the probability is less than 0.05.

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