True or False a s2 is a statistic b as the level of confiden

True or False:

a. s^2 is a statistic

b. as the level of confidence increases, the assoicated confidence intervals will grow wider

c. the margin of error can be determined if you know only the length of a confidence interval

d. the confidence interval for a population mean can be obtained if the experimenter knows only the margin of error and the sample mean

e. the margin of error depends on the confidence level of the confidence interval

Solution

a) true

b) true

c) true

d) true

e) False, it depends on the sample size.