A lab at the DeBakey Institute orders 150 rats a week for each of the 52 weeks in the year for experiments that the lab conducts.Suppose the mean cost of rats used in lab experiments turned out to be $20.00 per week.Interpret this value.
A)Most of the weeks resulted in rat costs of $20.00
B)The median cost for the distribution of rat costs is $20.00
C)The expected or average costs for all weekly rat purchases is $20.00
D)The rat cost that occurs more often than any other is $20.00

Question

Quizplus · Accepted Answer

The mean cost of rats is the average cost for all 52 weeks, so option C is correct. Options A, B, and D are incorrect interpretations of the mean cost.

A Lab at the DeBakey Institute Orders 150 Rats a Week