Let the random variable Z follow a standard normal distribution.Find P(-2.21

Question

Let the random variable Z follow a standard normal distribution.Find P(-2.21 < Z < 0).
A)0.9864
B)0.4864
C)0.0136
D)0.5136

Quizplus · Accepted Answer

We need to find the area under the standard normal curve between -2.21 and 0. Since the standard normal distribution is a continuous probability distribution, we can use the z-table to find the area. From the z-table, the area to the left of 0 is 0.5 and the area to the left of -2.21 is 0.0136. So, the area between -2.21 and 0 is:

0.5 - 0.0136 = 0.4864

Therefore, the correct answer is B.

Let the Random Variable Z Follow a Standard Normal Distribution