# Quality control. The manufacturer in Exercise 54 has noticed that the number of faulty cell phones in

## Question:

Quality control. The manufacturer in Exercise 54 has noticed that the number of faulty cell phones in a production 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?

Fantastic news! We've Found the answer you've been seeking!

## Step by Step Answer:

**Related Book For**

## Business Statistics

**ISBN:** 9780321716095

2nd Edition

**Authors:** Norean D. Sharpe, Paul F. Velleman, David Bock, Norean Radke Sharpe