Check my In order to estimate the mean 30-year fixed mortgage rate for a home loan in the United States, a random sample of 19 recent loans is taken. The average calculated from this sample is 6.05%. It can be assumed that 30-year fixed mortgage rates are normally distributed with a population standard deviation of 0.5%. Compute 90% and 99% confidence intervals for the population mean 30-year fixed 0.83 mortgage rate. (You may find it useful to reference the z table. Round your final answer to 2 decimal places. Enter your answers as points percentages, not decimals.) 00:31:32 Confidence Level Confidence Interval 90% to Skipped 99% to %% eBook References