1. According to Nielsen Media Research viewership data, the top television broadcast of all time was the last episode of M*A*S*H, which aired on February 28, 1983, and was viewed by an estimated 60.2% of all TV households. Assuming this estimate was based on a simple random sample of 1800 TV households, what is the 95% confidence interval for 7T 5 the proportion of all TV house- holds who viewed the last episode ofM*A*S*H? Source: The World Almanac and Book of Facts 2009, p. 293.
2. In a major industry where well over 100,000 manufacturing employees are represented by a single union, a simple random sampling of n 5 100 union members finds that 57% of those in the sample intend to vote for the new labor contract negotiated by union and manage- ment representatives.
a. What is the 99% confidence interval for 7T 5 the population proportion of union-represented employees who intend to vote for the labor contract?
b. Based on your response to part (a), does contract approval by the union appear to be a "sure thing"? Why or why not?