A sample of size n 5 from a large population that is though

A sample of size n = 5 from a large population that is thought to be normal gave the following data: 7.5, 9.3, 6.2, 8.4, 9.8 (a) Create a 90% Cl for the population mean mu. (b) If a 95% Cl were to be constructed using the same data, would it be larger or smaller than the created in (a)? Explain your answer theoretically, and not by actually creating the interval.