A lab orders 100 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 $13.00 per week.Interpret this value.
A)Most of the weeks resulted in rat costs of $13.00.
B)The median cost for the distribution of rat costs is $13.00.
C)The expected or mean cost for all weekly rat purchases is $13.00.
D)The rat cost that occurs more often than any other is $13.00.

Question

Quizplus · Accepted Answer

The mean cost of rats used in lab experiments being $13.00 per week means that if you were to take the total cost of rats used in lab experiments for the year (52 weeks x 100 rats per week = 5200 rats), and divide it by 52 (the number of weeks in a year), the result would be $13.00. This is the expected or mean cost for all weekly rat purchases.

A Lab Orders 100 Rats a Week for Each of the 52