A sample of 111 mortgages approved during the current year showed that 33 were issued to a single-earner family or individual. The historical percentage is 25 percent. At the .05 level of significance in a right-tailed test, has the percentage of single-earner or individual mortgages risen? (a-2) Calculate the test statistic. (Round intermediate calculations to 2 decimal places. Round your answer to 4 decimal places.) Test statistic