A random sample of 56 credit card holders showed that 41 regularly paid their credit card bills on time. The 95% confidence interval for true proportion of all people who regularly pay their credit card bills on time is: 0.616
a. The probability that true proportion, p, is in specified interval is 95%.
b. You are 95% confident that the interval contains the true proportion.
When finding a confidence interval for the population mean of a normal distribution, what method is selecting in Minitab if a sample of 11 is used and σ is not known?
a. 1-Sample Z
b. 1-Sample t
c. 1 Proportion
d. None of these can be used