Use a proportion to make the conversion. Round answers to two decimal places.
-In a finite mathematics class, for a particular test, we find that 1 standard deviation equals 8 points. How many points equal 5.25 standard deviations?
A) 42 points
B) 0.66 points
C) 6.56 points
D) 1.52 points

Question

Quizplus · Accepted Answer

To find how many points equal 5.25 standard deviations, we use the proportion: $1 \text{ standard deviation} = 8 \text{ points}$, so $5.25 \text{ standard deviations} = 5.25 \times 8 = 42 \text{ points}$.

Use a Proportion to Make the Conversion