Fans A survey of 81 randomly selected people standing in line to enter a football game found that 73 of them were home team fans.  a) Explain why we cannot use this information to construct a...

Fans A survey of 81 randomly selected people standing in line to enter a football game found that 73 of them were home team fans.

 a) Explain why we cannot use this information to construct a confidence interval for the proportion of all people at the game who are fans of the home team.

*b) Construct a “plus-four” confidence interval and interpret it in this context.