Which of the following would constitute the BEST random sample of a university population?
a. The residents who live in the dorms, which represents 70% of the university population
b. The students who take classes during the day, which represents 85% of the university population
c. The students whose names were drawn from a list of all students enrolled in classes, a sample representing 30% of the university population
d. The students attending a popular athletic event, which represents 10% of the university population
C
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Which of the following is an assumption of the chi-square test?
a. The independent variable is always continuous. b. The dependent variable is always continuous. c. The observations are independent. d. The expected frequencies are less than five.
According to Erikson's theory, children in middle childhood tend to judge themselves as either
A. suppressed or superior. B. industrious or inferior. C. competent or awkward. D. intelligent or stupid.