Based on the data in Question 2a, calculate the z-score if x=30 Go to 2 Decimal points. Typed numeric answer will be automatically saved. -2.56 Saved Question 5 Using the results of the previous Question2 (a-c) and the 95% Critical Value what are the upper and lower values (Confidence Interval)? Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer. a 30.50/55.10 b 25.11/55.11 c 26.61/51.39 d 21.25/60.62 Question 2 You are performing a study about weekly per capita milk consumption. A previous study found weekly per capita milk consumption to be normally distributed, with a mean of 42.1 fluid ounces and a standard deviation of 7.9 fluid ounces. You randomly sample 30 people and record the weekly milk consumption shown below. 37 47 31 34 39 42 33 53 35 43 38 26 35 49 41 40 39 42 44 42 35.30 26 38 51 38 42 39 47 34 Calculate the mean up to 2 decimal places if needed. Typed numeric answer will be automatically saved. 39. Saved Question 3 Based on the Question 2a data, calculate the standard deviation. (up to 2 decimal places) Typed numeric answer will be automatically saved. 6.63 Saved