22). Let X and Y denote the weights in grams of male (In (8.2-V The botanist in Example 8.2-1 is really interested (IAA), let X1 and X2 equal the growth responses (in calculate the value of the test statistic and state your conclusion. Locate the test statistic on your figure. c) Construct two box plots on the same figure. Does this confirm your conclusion? some of the exercises that follow, we must make assumptions such as the existence of normal distributions with equal variances.) in testing for synergistic interaction. That is, given the two hormones gibberellin (GA3) and indoleacetic acid 8.2-3. Straw berry Nu 21. ben be ans mm) of dwarf pea stem segments to GAz and IAA, respectively and separately. Also, let X = X1 + X2 and let y equal the growth response when both hormones are present. Assuming that X is N(Mx, 02) and Y is N(uy,02), the botanist is interested in testing the hypoth- esis Ho: Mx = My against the alternative hypothesis of synergistic interaction H1: Mx