Question: 9.) Assume you are evaluating the defect rates for a product. Given a normally distributed variable with a mean of 50 and a standard deviation

9.) Assume you are evaluating the defect rates for a product. Given a normally distributed variable with a mean of 50 and a standard deviation of 10, the probability of observing 40< x<60 would be which of the following?

1. 0.5

2. 0.68

3. 0.34

4. 0.16

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