The results of a two-factor analysis of variance produce df = 1, 30 for the F-ratio for factor A, and df = 2, 30 for the F-ratio for the AxB interaction. Based on this information, how many levels of factor B were compared in the study?
a. 1
b. 2
c. 3
d. Cannot be determined without additional information
C
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Almost 20 million adults and adolescents report current use of this substance in the United States, but it is illegal. It produces mild perceptual and sensory distortions, and is usually smoked. It is called ____
a. marijuana b. cocaine c. heroin d. nicotine
At what age do babies typically begin to reach and grasp?
a. 3-4 months b. 6-8 months c. 5-7 months d. 8-10 months
What is the typical quality of our health in emerging adulthood?
What will be an ideal response?
The United States, Canada, Japan, South Korea, Australia, New Zealand, and nearly all the countries of Europe are examples of ____
a. developed countries b. developing countries c. collective cultures d. individualistic cultures