Let z be a normal random variable with mean 0 and standard deviation 1.What is P(z 2.4)?
A)0.4918
B)0.9918
C)0.0082
D)0.4793
E)0.0820

Question

Let z be a normal random variable with mean 0 and standard deviation 1.What is P(z > 2.4)?
A)0.4918
B)0.9918
C)0.0082
D)0.4793
E)0.0820

Quizplus · Accepted Answer

The probability P(z > 2.4) for a standard normal distribution (mean = 0, standard deviation = 1) can be found using standard normal distribution tables or a calculator. The value is 1 - P(z < 2.4). Looking up 2.4 in the Z-table gives us approximately 0.9918, so 1 - 0.9918 = 0.0082, which corresponds to option C.

Let Z Be a Normal Random Variable with Mean 0