MATH 1530 – QUIZ #4 (Quizpak 2) Name ______________________________
1. Consider a large set of data with a mean of
120x
and a standard deviation of
4s
.
If the data has a mound-shaped distribution, use the Empirical Rule to fill in the blanks
and label each region with the appropriate percentage.
2. What percentage of scores should you expect to fall below 116? ________________
3. Find the
z
-score for a score of
125x
.
z
= ________________ = ________________ = ________________
4. Explain in a complete sentence what this
z
-score tells us about the score
125x
.
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
______ ______ ______ ______ ______ ______
2x s
x s
x
x s
2x s
______ ______ ______ ______ ______
