A production manager is concerned about possible extreme variation in the weights of boxes of produce being delivered to the supermarket. If the weights vary extremely or low on average, the store will have dissatisfied customers. As a test, the manager has selected the sample of produce boxes. The weights are as follows: 18.5, 12.0, 17.0, 22.5, 31.4, 10.2, 25.6, 19.2, 17.6, 17.3, 22.2, and 13.3. a. Compute the standard deviation (7points)b. Identify the range that includes one standard deviation away from the sample mean for weights of boxes of produce. What are the extreme variation? Please show all calculations