An experiment was run in which group A was given 3 minutes to study a word list, while group B was given 10 minutes to study the same list. Later, both groups were asked to recall words from the list. In this study, the number of words recalled is the __
a. independent variable
b. dependent variable
c. placebo
d. control group
Answer b % correct 82 a= 10 b= 82 c= 5 d= 3 r = 40.
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The F-ratio is a ratio of _____ variance over _____ variance
a. between-groups; within-groups b. within-groups; between-groups c. total; between-groups d. total; within-groups
The public initially distrusted behavioral treatment methods because they were ____
a. ?ineffective and time consuming b. ?not scientifically validated c. ?based on animal research d. ?overly complex and impractical
A study about the college aptitude of seniors at South City High School has resulted in a sample mean with a corresponding z-score of +1.89 . If the critical value for the region of rejection is what is the correct conclusion?
a. Since the z-value falls within the region of rejection, we should conclude this sample mean likely represents some other population. b. Since the z-value does not fall within the region of rejection, we should not conclude this sample mean represents some other population. c. Since the z-value falls within the region of rejection, we should not conclude this sample mean represents some other population. d. Since the z-value does not fall within the region of rejection, we should conclude this sample mean likely represents some other population.
With bulimia, when is a binge most likely?
a. following food restriction, such as dieting c. prior to a date b. following physical exercise d. none of these