Assume the distributiоn оf cоpper content (meаsured аs а percent) in sintered brake pads follows an approximate normal distribution with a mean of 31.6 and a standard deviation of 2.5. a) What is the approximate distribution of the sample mean copper content if we sample 16 pads? Include the mean and standard error of this distribution. b) What is the probability that the mean of our sample would be higher than 32% copper? c.) If we were to randomly sample 16 brake pads from this population, what would the bounding values be for the central 97% of possible sample means be?