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Suppose that scores on a standardized test in mathematics taken by students from large and small high schools are

(1 point) Suppose that scores on a standardized test in mathematics taken by students from large and small high schools are wa, 0'2) and N (py, 0'2). respectively, where 0-2 is unknown. If a random sample of n = 9 students from large high schools yielded 36 = 83.59, 5% = 59.64, and a random sample of m = 15 students from small high schools yielded 57 = 73.36, 5'; = 49.33 nd a 99% confidence interval for Jux py.