Find z-scores for a Given Area
-For a standard normal curve, find the z-score that separates the bottom $90 \%$ from the top $10 \%$.
A) $1.28$
B) $0.28$
C) $1.52$
D) $2.81$

Question

Quizplus · Accepted Answer

The z-score that separates the bottom 90% from the top 10% is 1.28. This is because in a standard normal distribution, a z-score of 1.28 corresponds to the 90th percentile, leaving 10% in the tail above it.

Find Z-Scores for a Given Area -For a Standard Normal 90%90 \%90%

Find Z-Scores for a Given Area
-For a Standard Normal $90 \%$