When is the t distribution used instead of the Z distribution to test the significance of the difference between two sample means?
a. never
b. when sample size is very large
c. when one sample is much larger than the other
d. when N is small
d
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Internal validity is not an issue with quasi-experiments because there are experimental and control groups
a. True b. False Indicate whether the statement is true or false
According to Elijah Anderson, in Code of the Streets, in inner-city communities two orientations exist. What are these two orientations?
A. rich and poor B. old and young C. decent and street D. White and Hispanic
Which of the following statements is true of the relationship between approach goals and avoidance goals?
A) The greater the fulfillment of approach goals, the greater the fulfillment of avoidance goals. B) The greater the fulfillment of approach goals, the lesser the fulfillment of avoidance goals. C) Approach goals and avoidance goals are independent of each other. D) Approach goals and avoidance goals are seldom present together in a relationship
Who has the highest risk of being a crime victim?
a. A white male business executive working in a large city b. A female college student c. A 72-year-old white woman living alone in a small town d. A 19-year-old black male living in a large city