To find the probability of a standard normal random variable Z being less than a certain value, you can use a standard normal distribution table or a calculator.
For example, looking at a standard normal distribution table, you can find that the probability of Z being less than 0.2919 is approximately 0.6144. This means that the probability of Z being greater than 0.2919 is 1 - 0.6144 = 0.3856.
Similarly, the probabilities of Z being less than the other given values are approximately:
- 0.2190: 0.5869
- 0.1091: 0.5429
- 0.0991: 0.5386
- 0.3019: 0.6179
Therefore, the correct value for Z being from a standard normal population is 0.0991.
Find the if the random variable Z is from a standard normal population.
0.2919
0.2190
0.1091
0.0991
0.3019
1 answer
1 answer