From a random sample of 36 business days from January 12, 2017 through January 12, 2018, the mean closing price of Egyptian iron and steel stock was 5.62 Egyptian pound. Assume the population standard deviation is 1.91 EGP.

You are given the sample mean and the population standard deviation. Use this information to construct 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals.