If you knew the proportion of the curve associated with scores of 150-175 and you wanted to know the number of people with such scores, you would need to find out
A) the z scores associated with 150 and 175
B) the standard deviation of the population
C) the number of people in the population
D) something besides the three other alternatives.

Question

Quizplus · Accepted Answer

To determine the actual number of people with scores between 150 and 175, knowing the proportion of the curve that these scores represent, you would need to know the total number of people in the population. This is because the proportion can be converted into an actual number only when the total population size is known.

If You Knew the Proportion of the Curve Associated with Scores