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Use the given statistics to complete parts (a) and (b). Assume that the populations are normally distributed. (a) Test whether , >u at the

Use the given statistics to complete parts (a) and (b). Assume that the populations are normally distributed. (a) Test whether , >u at the = 0.01 level of significance for the given sample data. (b) Construct a 90% confidence interval about - H. CXS n Population 1 25 48.9 4.5 Population 2 017 45.6 11.6

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