A car dealer wants to get information about the number of years car owners keep their cars. A random sample of 25 car owners resulted in ?̅ = 7.01 years, and ? = 3.74years. Assume thatthe sample is drawn from a normally distributed population.
All other information remaining unchanged, which of the following would produce a wider interval than the 95% confidence interval constructed?
(a) The sample size is 29 instead of 25
(b) The sample size is 10 instead of 25
(c) Compute a 80% confidence interval rather than a 95% confidence interval.
Already registered? Login
Not Account? Sign up
Enter your email address to reset your password
Back to Login? Click here