The annual commissions per salesperson employed by a manufacturer of light machinery averaged $40,000 with a standard deviation of $5,000. What percent of the sales persons earn between $32,000 and $42,000?
A) 60.06%
B) 39.94%
C) 34.13%
D) 81.66%

Question

Quizplus · Accepted Answer

Using the properties of the normal distribution, we calculate the z-scores for $32,000 and $42,000, then find the area between these z-scores. This area corresponds to approximately 60.06% of the distribution.

The Annual Commissions Per Salesperson Employed by a Manufacturer of Light