Answer the following statement(s) true (T) or false (F)
A researcher has the idea that color blindness and gender are related; therefore, one way that the alternative hypothesis may be stated is that color blindness and gender are not independent.
Ans: T
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A researcher found a statistically significant one point difference in mean ACT scores between students who studied on their own and those who attended a professional test-taking seminar. The researcher can conclude that
a. the means for the groups are statistically different from each other. b. the professional training seminar produces considerably better ACT scores. c. professional training is necessary for better ACT scores. d. None of these is true.
The decision-making process has __________ steps.
a. five b. three c. eight d. ten
Researchers who have claimed that music training dramatically increases intelligence may have overstated this effect, as research typically shows increases in brain regions directly involved in music but not necessarily other intelligence functions.
Answer the following statement true (T) or false (F)
If a research study has population validity, this means that
a. the sample statistic and the corresponding population variable are identical. b. the research measures are appropriate for the target population. c. the research design is appropriate for the target population. d. the sample is representative of the population from which it was selected.