When asked to recall single-digit numbers presented in various digit span sizes, the typical adult starts to find the task a bit tricky once they get to approximately _____ digits
A) 3
B) 4
C) 5
D) 7
Answer: B
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If we eliminate the top and bottom 25% of the data and take the range of what remains we have the
a. range. b. adjusted range. c. interquartile range. d. quartile variance.
Richard Simmons wants to know whether his original weight-loss system (Simmons I) is as effective as his new weight-loss system (Simmons II). His results indicate that people on Simmons I lose an average of 28.5 pounds in six months and people on Simmons II lose an average of 30.1 pounds in six months. What type of statistics should Richard use to see if the Simmons II system is really better
than the Simmons I system? a. ?inferential b. ?descriptive c. ?mean d. ?mode
To determine whether weight loss is easier when you maintain a goal focus, Conlon and his colleagues assigned participants to one of three weight loss groups, goal-focused, achievement-focused, and no-focus control. Each group met for 12 weekly meetings and had access to a special website. At this point in their research, Conlon and his associates were completing which step in the scientific
method? a. disseminating their results b. building a theory c. defining the problem d. gathering evidence to test their hypothesis
Because of high costs and limited insurance coverage, the average patient receives only
a. three therapy sessions after which less than one percent feel better. b. five therapy sessions after which only 20 percent feel better. c. nine therapy sessions after which only 45 percent feel better. d. 12 therapy sessions after which about 75 percent feel better.