Quality controlthe manufacturer in exercise 54 has noticed, Ask an Expert

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Quality control

The manufacturer in Exercise 54 has noticed that the number of faulty cell phones in a produc- tion run of cell phones is usually small and that the quality of one day's run seems to have no bearing on the next day.

a) What model might you use to model the number of faulty cell phones produced in one day?

b) If the mean number of faulty cell phones is 2 per day, what is the probability that no faulty cell phones will be produced tomorrow?

c) If the mean number of faulty cell phones is 2 per day, what is the probability that 3 or more faulty cell phones were produced in today's run?

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Statistics and Probability, Statistics

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