Solved: Table 2-1 provides data on wafers categorized by

Chapter 2, Problem 164E

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QUESTION:

Problem 164E

Table 2-1 provides data on wafers categorized by location and contamination levels. Let A denote the event that contamination is low, and let B denote the event that the location is center. Are A and B independent? Why or why not?

TABLE 2-1. Wafers in Semiconductor Manufacturing Classified by Contamination and Location

Location in

Sputtering Tool

Contamination

Center

Edge

Total

Low

514

68

582

High

112

246

358

Total

626

314

Questions & Answers

QUESTION:

Problem 164E

Table 2-1 provides data on wafers categorized by location and contamination levels. Let A denote the event that contamination is low, and let B denote the event that the location is center. Are A and B independent? Why or why not?

TABLE 2-1. Wafers in Semiconductor Manufacturing Classified by Contamination and Location

Location in

Sputtering Tool

Contamination

Center

Edge

Total

Low

514

68

582

High

112

246

358

Total

626

314

ANSWER:

Solution

Step 1 of 1

We have to find whether A and B are independent or not

Let A be the event that the contamination is low

Let B be the event that the location is center

If A and B are independent it should satisfies the condition

Now

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