You intend to estimate a population mean u from the following sample. 32.1 35.6 16.9 18.1 11.1 48.5 31.3 44.9 5.7 47.9 39.7 73.6 23.4 25.1 -0.4 21.5 32.5 69.8 52.5 83.6 68.4 70.2 67.2 37.3 39.4 18.5 35.1 39.1 10.4 58.6 28.4 6.7 31.7 22.3 68.1 64.2 23.7 41 10.4 -5.7 41.1 33.6 48.2 51.9 36.3 32.2 16.7 35.3 31.8 37.6 0.5 43.7 Find the 80% confidence interval. Enter your answers accurate to two decimal places.