QUESTION 1 (2 points) A. What do we expect will happen to our estimate of the standard deviation of the population if we increase our sample size? (Circle the correct answer.) a. Increase b. Decrease c. Stay the same B. We are interested in estimating the mean height of a population of Poplar trees. We conduct two studies. In the first, we use a sample of 40 trees and estimate the mean and a 95% confidence interval (CI) around our estimate. In the second study, we use a sample of 80 trees from the same forest. If, in the first study, the range of the 95%CI is r metres, do we expect the range of the 95%CI for the second (larger) study to be (circle the correct answer): a Greater than r metres b. Equal to r metres c. Equal to 0.5r metres d. Between 0.5r and r metres e. Less than 0.5r metres