18. You are a manufacturing engineer and you are trying to calibrate a machine. The machine makes a special wire that needs to be exactly 16 nanometers in width to work correctly. Otherwise the materials are wasted. You calibrate the machine, turn it on, and then measure the resulting widths of 100 sections of wire. They have a mean width of 16 nm. Do you want those measurements to have a big standard deviation, or a small standard deviation? Circle your answer. OBig OSmall Olt does not matter Explain your answer to 18. Ricks, PSYC 200, Spring 2023, 19. Let's look into the future for a moment, and imagine that the standard deviation for this exam's test scores is very large. As the instructor, I want the students to do well. Should I worry that the standard deviation for the exam's scores is unusually large? Justify your response. OYes, worry. ONo, don't worry. Explanation: 20. Name two specific steps that a researcher could take to reduce a standard deviation, if (s)he wanted to do so (e.g., "reduce variability" is not a specific step). Way A: Way B