In a current study, a random sample of 10 teachers from Florida and an independent random sample of 10 teachers from Washington have been asked to report their annual income. The data obtained are as follows: Annual income in dollars Florida 42292, 35686, 31216, 33775, 21119, 30249, 38649, 25127, 47940, 34299 Washington 31740, 44495, 55290, 40345, 47047, 40691, 37046, 45367, 56529, 46041 The population standard deviations for the annual incomes of teachers in Florida and in Washington are estimated as $6300 and $6000, respectively. It is also known that both populations are approximately normally distributed. Construct a 90% confidence interval for the difference u,-, between the mean annual income of teachers from Florida (u,) and the mean annual income of teachers from Washington (,). Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to at least two decimal places. (If necessary, consult a list of formulas.) What is the lower limit of the 90% confidence interval? What is the upper limit of the 90% confidence interval?