A hamburger chain sells large hamburgers. When we take a sample of 30 hamburgers and weigh​ them, we find that the mean is 0.53 pounds and the standard deviation is 0.3 pound. a. A technology input menu for calculating a confidence interval requires a sample​ size, a sample​ mean, and a sample standard deviation. State how you would fill in these numbers. b. Using the accompanying technology​ output, report the confidence interval in a carefully worded sentence.