If X has a standard normal distribution, what is P(X > 0)?
Correct answer: C. 0.500
- A. 0.025
- B. 0.250
- C. 0.500
- D. 0.975
Explanation
The standard normal distribution is symmetric about zero, and zero is its mean and median. Therefore, exactly half of the probability lies above zero, giving P(X > 0) = 0.5.
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