A mortgage specialist would like to analyze the average mortgage rates for Atlanta, Georgia. He studies the following sample APR quotes. These are the annual percentage rates (APR) for 30-year fixed loans. If he is willing to assume that these rates are randomly drawn from a normally distributed population, can he conclude that the mean mortgage rate for the population exceeds 4.2%? Test the hypothesis at a 10% level of significance using (a) the p -value approach and (b) the critical value approach. Financial Institution APR in % G Squared Financial 4.125 Best Possible Mortgage 4.250 Hersch Financial Group 4.250 Total Mortgages Services 4.375 Wells Fargo 4.375 Quicken Loans 4.500 Amerisave 4.750