We are interested in knowing more about the number of hours students study for ST 311 each week. We know that there are 800 students enrolled in the course. with 35 students per section. We also know that ST 311 students study 10 hours a week on average, and that the standard deviation is 2 hours. We randomly sample 40 students taking the course. and record the average numher of hours that they study per week. What is the sample size? A. 35 @340 C. 100 D. 800 What is the standard deviation of the sample mean (also known as the stande error)? A. 0.05 B. 0.32 C. 2 D. 10