For the standard normal curve, find the z-score that corresponds to the first quartile.
A)-0.67
B)0.67
C)0.77
D)-0.23

Question

Quizplus · Accepted Answer

The first quartile represents 25% of the area under the curve to the left of a certain point. Looking at a standard normal table, we can find the z-score that corresponds to 25% of the area to the left of that point, which is approximately -0.67. Therefore, choice A is the best answer. The first quartile corresponds to 25% of the area under the normal curve, which is also known as the standard normal distribution. Using a standard normal table or calculator, we can find that the z-score that corresponds to 25% area is approximately -0.67. Therefore, the answer is A.

For the Standard Normal Curve, Find the Z-Score That Corresponds