A Monster.com poll of 3,057 individuals asked: “What’s the longest vacation you plan to take this summer?” The following relative frequency distribution summarizes the results.[You may find it useful to reference the z table.]
Source:The Boston Globe, June 12, 2007.
a. Construct the 95% confidence interval for the proportion of people who plan to take a one-week vacation this summer.(Round intermediate calculations to at least 4 decimal places. Round "z" value and final answers to 3 decimal places.)
b. Construct the 99% confidence interval for the proportion of people who plan to take a one-week vacation this summer.(Round intermediate calculations to at least 4 decimal places. Round "z" value and final answers to 3 decimal places.)
c. Which of the two confidence intervals is wider?
multiple choice
Already registered? Login
Not Account? Sign up
Enter your email address to reset your password
Back to Login? Click here