In evaluating the F in the analysis of variance, we need to know
a. the degrees of freedom for the Between Groups term.
b. the degrees of freedom for the Within Groups term.
c. only the total number of degrees of freedom.
d. both a and b
D
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Dr. Limmex is trying to win FDA approval for a new drug to treat anxiety. Dr. Limmex claims that 14% of the people who took this new drug reported reduced anxiety; however, other researchers claim that 14% of patients who receive no treatment also report reductions in their anxiety levels. It appears that the patients who improved after taking Dr. Limmex's drug
a. had a self-report bias. b. may have been experiencing placebo effects. c. were a non-representative sample. d. should have been placed in the control group, rather than the experimental group.
Which of the following is a preschool program designed to enhance the cognitive development and academic skills of economically disadvantaged children?
a. Jump Start b. HOME c. Focus School d. Head Start
Linguists have grouped the distinct human languages into about _____ language families.
A) 30 B) 50 C) 70 D) 90
Effective customer relations are
A. Important only in small companies B. An important part of an organization's marketing strategy C. Unimportant in determining whether customers return