A professor of women's studies is interested in determining if stress affects the menstrual cycle. Ten women are randomly sampled for an experiment and randomly divided into two groups. One of the groups is subjected to high stress for two months while the other lives in a relatively stress-free environment. The professor measures the menstrual cycle (in days) of each woman during the second month. The following data are obtained. High stress 20 23 18 19 22 Relatively stress free 26 31 25 26 30 Assume there is a real effect and estimate the size of the effect. _________.
a. 0.8102 c. 0.4322
b. 0.6810 d. 0.5776
Question 2
A professor of women's studies is interested in determining if stress affects the menstrual cycle. Ten women are randomly sampled for an experiment and randomly divided into two groups. One of the groups is subjected to high stress for two months while the other lives in a relatively stress-free environment. The professor measures the menstrual cycle (in days) of each woman during the second month. The following data are obtained. High stress 20 23 18 19 22 Relatively stress free 26 31 25 26 30 Assume you are evaluating H0 using the t test. The df for determining tcrit are _________.
a. 4 c. 8
b. 9 d. 3
Studies in landscape ecology indicate that interactions between biotic and abiotic processes are dep
An overview of photosynthesis: cooperation of the light reactions and the Calvin cycle.
Pott’s Occurs at the ankle and affects both bones of the lower leg (fibula and tibia)
More young men than women live in their parents’ homes, though the proportion for both decreases ...
Women can express breast milk using a breast pump
The cell cycle