=+ Assuming that both zinc mass distributions are at least approximately normal, carry out a test at

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=+ Assuming that both zinc mass distributions are at least approximately normal, carry out a test at significance level .05 to decide whether true average zinc mass is different for the two types of batteries.

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Applied Statistics For Engineers And Scientists

ISBN: 9781133111368

3rd Edition

Authors: Jay L. Devore, Nicholas R. Farnum, Jimmy A. Doi

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