Freshmen GPAs First-semester GPAs for a random selection of freshmen at a large university are shown below. Estimate the true mean GPA of the freshman class with 91% confidence. Assume o = 0.62. Use a graphing calculator and round the answers to two decimal places. Assume the population is normally distributed. 3.4 3.5 3.8 3.9 2.7 3.3 2.8 3 3.8 2 2.8 1.9 4 2.2 2.8 2.9 2.1 3.2 3 3.8 3.1 2.7 3 Enviar datos a Excel