Let X be a random variable following normal distribution with mean +1 and…
2008
Let X be a random variable following normal distribution with mean +1 and variance 4. Let Y be another normal variable with mean -1 and variance unknown If P(X <=-1) = P(Y >=2). the standard deviation of Y is
- A.
3
- B.
2
- C.
sqrt(2)
- D.
1
Attempted by 4 students.