1. Suppose that we have sampled n = 12 items from a normal distribution with a standard deviation of 5.5. Would a sample standard deviation of s = 2.9 be reasonable to see? Justify your answer. 2. We sample twenty items from a distribution that is known to be normal. Suppose we obtain a sample mean of 53 and a sample standard deviation of 6. Is it reasonable to believe that the population mean is 50? Explain. How to solve these two questions