Chapter 11.1, Problem 8E

The paper “Exercise Thermoregulation and Hyperprolac-tinaemia” (Ergonomics, 2005: 1547–1557) discussed how various aspects of exercise capacity might depend on the temperature of the environment. The accompanying data on body mass loss (kg) after exercising on a semi-recumbent cycle ergometer in three different ambient temperatures (6°C, 18°C, and 30°C) was provided by the paper’s authors.

a. Does temperature affect true average body mass loss? Carry out a test using a significance level of .01(as did the authors of the cited paper).

b. Investigate significant differences among the temperatures.

c. The residuals are .20, .30, −.40, −.07, .30, .00, .03, −.20, −.14, .13, .23, −.27, −.04, .03, −.27, −.04,.33, −.10, −.33, −.53, .67, .11, −.33, .27, .01, −.13,.24. Use these as a basis for investigating the plausibility of the assumptions that underlie your analysis in (a).