=+54. Suppose not only that the two population or treatment response distributions are normal but also that
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=+54. Suppose not only that the two population or treatment response distributions are normal but also that they have equal variances. Let 2 denote the common variance. This variance can be estimated by a “pooled” (i.e., combined) sample variance as follows:
s 2
p 5 a n1 2 1 n1 1 n2 2 2 bs 2
1 1 a n2 2 1 n1 1 n2 2 2 bs 2
2
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Related Book For
Applied Statistics For Engineers And Scientists
ISBN: 9781133111368
3rd Edition
Authors: Jay L. Devore, Nicholas R. Farnum, Jimmy A. Doi
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