Question: Using the distribution in Exercise 2, let the random variable Y be the number of defects on a contact lens randomly selected from lenses produced

Using the distribution in Exercise 2, let the random variable Y be the number of defects on a contact lens randomly selected from lenses produced during the shift.

(a) Find the mean and variance of Y for the shift.

(b) Assume that the lenses are produced independently.What is the probability that five lenses drawn randomly from the production line during the shift will be defect-free?

LO.1

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