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) The median cost for the distribution of rat costs is $13.00.
B) The expected or average cost for all weekly rat purchases is $13.00.
C) The rat cost that occurs more often than any other is $13.00.
D) Most of the weeks resulted in rat costs of $13.00.

Question

Quizplus · Accepted Answer

The mean cost of rats used in lab experiments being $13.00 means that if you were to add up the cost of rats for all 52 weeks and divide by 52, you would get an average cost of $13.00 per week.

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