Interpret the Area under the Standard Normal Curve as a Probability
-$\mathrm { z } = 0.5$ and $\mathrm { z } = 1.4$
A) $0.2277$
B) $0.6915$
C) $0.9192$
D) $0.3085$

Question

Quizplus · Accepted Answer

The area under the standard normal curve between $z = 0.5$ and $z = 1.4$ represents the probability of a value falling within that range. By looking up these z-scores in a standard normal distribution table or using a calculator, the difference in cumulative probability between $z = 1.4$ and $z = 0.5$ gives approximately $0.9192 - 0.6915 = 0.2277$, which matches choice A.

Interpret the Area Under the Standard Normal Curve as a Probability