Please help me find the a) sample mean B) Sample standard deviation. C) construct a 95% con. Interval for pop.

Homework: Module 4A Homework: 6.1 - 6.3 Question 23, 6.2.26-T HW Score: 82.98%, 23.23 of 28 points Save Part 1 of 3 x Points: 0 of 1 The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c) below 23 3.3 28 0 Assume the population is normally distributed . 18 09 40 23 12 39 02 21 34 (a) Find the sample mean x =(Round to two decimal places as needed )