A researcher uses a repeated-measures study to compare two treatment conditions with a set of 20 scores in each treatment. What is the value of df for the repeated-measures t statistic?
a. 18 c. 38
b. 19 d. 39
B
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According to Eli Ginzberg, the period lasting until about age 11, when career choices are made and discarded without regard to skills, abilities, or available job opportunities, is called __________.
A. career consolidation B. the fantasy period C. the tentative period D. the realistic period
Which social change is brought about by longer life expectancies?
a. Establishing anti-discrimination norms b. Delaying marriage and reproduction c. Retiring earlier d. Adapting less frequently to environmental cues
Promoting people until they reach their highest level of incompetence is called:
a. the Anderson Analog b. the Peter Principle c. personpower planning d. none of these
If you are dealing with raw data and you can assume a ____, you can predict the intervals within which 68, 95, and 99 percent of your cases would be expected to fall if you know the mean and standard deviation of a sample
a. normal distribution b. random sample c. representative sample d. bivariate distribution