but often they must be addressed as preliminary analyses to

Last updated: 3/29/2023

but often they must be addressed as preliminary analyses to questions about the two means For this latter reason the variance test is presented prior to tests of two means EXAMPLE 7 1 Among the few reptilian lineages to emerge from the Mesozoic ex tinction are today s reptiles One of these the tuatara Sphenodon punctatus of New Zealand is the sole survivor of a group that otherwise disappeared 100 million years ago The mass in g of random samples of adult male tuatara from two islets in the Cook Strait are given below Is the variability in mass of adult males different on the two islets CHAPTER 7 Tests of Hypothesis Involving Two Samples Location A Location B 510 790 773 440 836 435 505 815 765 460 650 600 600 575 452