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One criterion used to evaluate employees in the assembly section of a large factory is the number of defective pieces per 1,000 parts produced. The

One criterion used to evaluate employees in the assembly section of a large factory is the number of defective pieces per 1,000 parts produced. The quality control department wants to find out whether there is a relationship between years of experience and defect rate. Since the job is repetitious, after the initial training period any improvement due to a learning effect might be offset by a loss of motivation. A defect rate is calculated for each worker in a yearly evaluation. The results for 100 workers are given in the table below.

Years Since Training Period

<1 Year

1-4 Years

5-9 Years

Defect Rate

High

6

9

9

Average

9

19

23

Low

7

8

10

If the defect rate and number of years after training period are independent, what is the expected number of employees with 5 to 9 years of training time and a low defect rate?

Answer: Answer (Please provide your answer to 2 decimal places).

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