In a sample of 60.0 electric motors, the average efficiency (in percent) was 85 and the standard deviation was 2. 1) Find a 98% lower confidence bound for the mean efficiency. (Round the final answer to three decimal places.) The 98% lower confidence bound is. 2) The claim is made that the mean efficiency is greater than 84.600%. With what level of confidence can this statement be made? (Round the final answer to three decimal places.) The level of confidence is %.