A random sample of 25 baseball players from the a baseball league's season was taken and the sample data were used to construct two confidence intervals for the population mean. One interval was (22.3,40.5).

The other interval was (21.1,41.7).

a. One interval is a 95% interval, and one is a 90% interval. Which is which, and how do you know?

b. If a larger sample size was used, for example, 40 instead of 25, how would this affect the width of the intervals? Explain.