Interval Estimation

According to a recent survey of 1,200 people, 61% feel that the president is doing a fine job. We are interested in the population proportion of people who feel the president is doing a fine job.

1. Using words, explain the random variables that we are trying to analyze.

2. Which distribution should you use for this problem? Explain your choice.

3. Construct a 90% confidence interval for the population proportion of people who feel the president is doing a fine job.