# Samples of a cast aluminum part are classified on the basis of surface finish (in micro inches)

## Question:

Length

Excellent Good

Surface excellent 80 2

Finish good 10 8

Let A denote the event that a sample has excellent surface finish, and let B denote the event that a sample has excellent length. Are events A and B independent?

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**Related Book For**

## Applied Statistics And Probability For Engineers

**ISBN:** 9781118539712

6th Edition

**Authors:** Douglas C. Montgomery, George C. Runger