Find and Interpret the Area under a Normal Curve
-more than $\$ 153,800$ if the standard deviation is $\$ 1900$.
A) $2.5 \%$
B) $97.5 \%$
C) $47.5 \%$
D) $95 \%$

Question

Quizplus · Accepted Answer

The area under a normal curve more than a certain value corresponds to the upper tail probability. Since the standard deviation is given, we can assume the mean is at the center of the distribution. The area more than a certain value is typically small, and $2.5\%$ represents the upper tail beyond two standard deviations from the mean in a standard normal distribution.

Find and Interpret the Area Under a Normal Curve -More $153,800\$ 153,800$153,800

Find and Interpret the Area Under a Normal Curve
-More $\$ 153,800$