Math 227 S, Spring 2020, Section # 24640, #1 sandra vega | 05/03/20 5:4 Quiz: Ch 6 Quiz Time Limit: 02:00:00 Submi This Question: 1 pt 5 of 6 (2 complete) This Quiz: 6 pts pc through (c) below. The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) 2.5 2.9 0 1.8 4.0 Assume the population is normally distributed. 2.4 1.5 0.4 2.2 (b) Find the sample standard deviation. s =(Round to two decimal places as needed.) (c) Construct a 95% confidence interval for the population mean u. A 95% confidence interval for the population mean is (I . ). Enter your answer in each of the answer boxes. OMO 5:4 SAMSUN