When considering area under the standard normal curve, decide whether the area between $z=-1.5$ and $z=1.1$ is bigger than, smaller than, or equal to the area between $\mathrm{z}=-1.1$ and $\mathrm{z}=1.5$.
A) equal to
B) bigger than
C) smaller than

Question

Quizplus · Accepted Answer

The standard normal curve is symmetric around $z=0$, so the areas between symmetric intervals around zero are equal, regardless of the specific values of $z$, as long as the intervals have the same width. In this case, both intervals ($-1.5$ to $1.1$ and $-1.1$ to $1.5$) span $2.6$ units on the $z$-axis, making the areas equal.

When Considering Area Under the Standard Normal Curve, Decide Whether z=−1.5z=-1.5z=−1.5

When Considering Area Under the Standard Normal Curve, Decide Whether $z=-1.5$