- CFA Exams
- CFA Level I Exam
- Study Session 3. Quantitative Methods (2)
- Reading 9. Common Probability Distributions
- Subject 6. The Normal Distribution

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**CFA Practice Question**

The time it takes an auto mechanic to replace a carburetor is known to follow a normal distribution with a mean of 53 minutes and a standard deviation of 7.5 minutes. This means that ______

A. the peak of the bell curve is at 53.

B. the peak of the bell curve is at 7.5.

C. it always takes at least 53 minutes to replace a carburetor.

**Explanation:**The peak of the bell-curve occurs at the mean of 53.

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**User Contributed Comments**
1

User |
Comment |
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sergashev |
I thought it should be MODE on the peak. But I was wrong, normal distribution has zero skewness. |