1. Using the data of Problem 7,interpret a confidence interval of ?in terms of d

1. Using the data of Problem 7,interpret a confidence interval of ?in terms of d, using C .95. Does it appear that the estimate has considerable precision? Explain. 2. Construct the 95% confidence interval for the data of Problem 7, expressing the upper and lower limits in terms of the number of standard deviations relative to a difference of zero between ?X and ?Y. Problem 7 Given: ?assume the samples are independent. Construct a confidence interval of ?according to (a) C .95 and (b) C .99.

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