Chapter 4.3, Problem 95E

(a)

To determine

To explain would you be surprised if a census revealed that $50\%$ of adults in the population would say their favourite sport to watch on TV is football or not.

Answer to Problem 95E

Yes.

Explanation of Solution

Yes, we will be surprised if a census revealed that $50\%$ of adults in the population would say their favourite sport to watch on TV is football because the percentage is covering half of the population that loves to watch the football on TV but when the researchers conducted the survey it reveals that only $37\%$ loves to watch football on TV and that is very less than the half of the sample the researcher examined.

(b)

To determine

To explain how Gallup could decrease the margin of error.

Explanation of Solution

Gallup can decrease the margin of error by improving the sample that is being surveyed. He can improve the sample that has to be examined or increase the sample to get the better result. He can also use the better method of conducting the survey i.e. using some technology instead of telephone to conduct the survey.