You intend to estimate a population mean from the following sample. 11.7 22.6 19.4 7.8 26.2 22.3 20.9 16.3 20.6 19.2 15.1 35.3 27 11.6 22.3 38.7 13 20.8 27.5 20.5 4.5 14.9 32.2 -1.2 22.6 26.7 20.1 17.7 8.6 -0.6 27.2 20.2 18.4 12.1 12.1 14.4 22.5 15.6 11.3 14.2 33.8 13.6 8.5 Find the 98% confidence interval. Enter your answer as a tri-linear inequality accurate to two decimal places (because the sample data are reported accurate to one decimal place).