If the calculated value of chi-square is greater than the critical value, the researcher should _____
a. reject the null hypothesis and conclude that the variables are independent
b. reject the null hypothesis and conclude that the variables are related
c. fail to reject the null hypothesis and conclude that the variables are independent
d. fail to reject the null hypothesis and conclude that the variables are related
B
A significant chi-square allows the researcher to reject the null hypothesis (which states that the variables are independent) and conclude that the variables are related.
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As compared to Asian students, U.S. students may
A) view academics as only one of many spheres in which they need to achieve. B) be more focused on the pursuit of academic excellence and feel less conflict from competing demands. C) perceive more pressure from their parents to achieve academically. D) perceive that the major task they face during adolescence is achieving high levels of academic success.
An association has been found between postpartum depression and infant characteristics. What is a major difficulty involved in interpreting this relationship?
a. There has been no genotype discovered that is directly linked with postpartum depression. b. It cannot be determined if the postpartum depression caused poor infant characteristics or if the poor infant characteristics caused postpartum depression. c. There has been no genotype discovered that is directly linked with poor infant characteristics. d. The mother's and infant's genotype are too closely related to interpret the relationship.
Behavioral economics is:
a. the combination of psychoanalysis and aggression theory. b. the contrast between left and right hemispheres. c. the combination of cognitive psychology and microeconomics. d. the contrast between sensation and perception.
Research suggests that a deficiency of __________ may contribute to the development of schizophrenia.
A. Vitamin B complex B. Vitamin C C. Vitamin D D. Vitamin E