Question 2
In a normal distribution, what is the appreximate
percentage of scores with a -score less than
A.
B
C.
D.

In a normal distribution, a -score of indicates that the score is 1.7 standard deviations above the mean. Using the empirical rule and standard normal distribution tables, we find that approximately 95% of scores fall within 2 standard deviations (both above and below the mean). Therefore, the percentage of scores with a -score less than is typically around , which points toward option D, being the most closely correct choice.

Now for a little fun, if you picture the normal distribution curve like a giant bell made of marshmallow fluff, each -score is like a point on that bell, telling you how far away from the delicious middle (the mean) you are! The further you go, the less “fluff” (or chance) you have—kind of like how the further you get from a party, the fewer cookies you might snag. So remember, most people (or scores) cluster around the mean, making it the life of the mathematical party!