Question: Two levels (low and high) of insulin doses are given to two groups of diabetic rats to check the insulin binding capacity, yielding the following data: Low dose: n1 = 8 1.98 S1 = 0.71 High dose: n2 = 13 = 1.30 82= 0.35 Give a 95% confidence interval for the difference in the true average insulin-binding capacity

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