Luxury or Necessity? A random sample of 1003 adult Americans was asked, Do you pretty

Chapter 9, Problem 27

(choose chapter or problem)

Luxury or Necessity? A random sample of 1003 adult Americans was asked, Do you pretty much think televisions are a necessity or a luxury you could do without? Of the 1003 adults surveyed, 521 indicated that televisions are a luxury they could do without. (a) Obtain a point estimate for the population proportion of adult Americans who believe that televisions are a luxury they could do without. (b) Verify that the requirements for constructing a confidence interval about p are satisfied. (c) Construct and interpret a 95% confidence interval for the population proportion of adult Americans who believe that televisions are a luxury they could do without. (d) Is it possible that a supermajority (more than 60%) of adult Americans believe that television is a luxury they could do without? Is it likely? (e) Use the results of part (c) to construct a 95% confidence interval for the population proportion of adult Americans who believe that televisions are a necessity