A researcher has conducted an experiment in which the independent variable is room temperature. Two conditions (a hot room and a cold room) were used. The dependent variable was the length of time required to complete a jigsaw puzzle. What is the best way to state that there is a relationship?
a. The mean times to complete the puzzle are not different for the two room conditions.
b. The mean room temperatures are not different for the length of time required to complete the jigsaw puzzle.
c. The mean times to complete the puzzle are different for the two room conditions.
d. The mean room temperatures are different for the length of time required to complete the d. jigsaw puzzles.
C
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Which of the following statements about the prevention and treatment of suicide is true?
A) It is nearly impossible to prevent adolescent suicide, as teenagers rarely exhibit warning signs around adults. B) Research shows that gun-control legislation that restricts the availability of handguns and other firearms to adolescents has little impact on suicide rates. C) Restraint by journalists in the media in publicizing teenage suicides aids prevention. D) Parents should not be concerned about teenagers' commenting, "I wish I were dead," because adolescents are overly dramatic.
Marijuana use in the 1960s symbolized the
a) new generation's rejection of established values b) decline of American youth. c) start of the drug war in America. d) end of legal recreational drug use in America.