3. The athletic department of the University of Colorado conducted a research to see how many students attended a home football game last season. The University has a population of 25,450, and the study showed that 870 of 1100 students sampled attended a home football game. What inferences can be made about student attendance at football games?
(a) What is the estimated proportion for the population?
(b) Using the 95% level of confidence, what is the confidence interval?
(c) Using the 99% level of confidence, what is the confidence interval?