Chapter 7, Problem T7.5SPT

To determine

To find: the best conclusion.

Answer to Problem T7.5SPT

We expect that the estimate from Ohio state will be closer to the truth than the estimate from Johns Hopkins because it is based on a larger sample size.

Explanation of Solution

Calculation:

Johns Hopkins $3\%\times 2000=0.03\times 2000=60$

Ohio State $3\%\times 60,000=0.03\times 60,000=1800$

It is observed that the sample of Ohio State is very larger than the sample of Johns Hopkins, which means that estimates of the population of Ohio State are much more accurate than the estimates of the population of Johns Hopkins.

This then means that it expected that from Ohio State to be very closer to the truth then the calculated from Johns Hopkins, due to the larger sample size.

Hence, the correct option is (d)