Do not use StatCrunch or other statistics software for this problem. You measure 43 textbooks' weights, and find they have a mean weight of 37 ounces. Assume the population standard deviation is 9.1 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight. Use z = 2 (rather than 1.96) for your calculations. Give your answers as decimals, to two places Tip: Use the Desmos calculator... [