A researcher employs inferential statistics to examine the difference in mean scores obtained by fourth grade boys and girls in a standardized math test. In this case, inferential statistics
A. indicate the strength of the relationship between the math scores of the boys and girls.
B. summarize and describe the important characteristics of the data.
C. test the research hypothesis.
D. indicate the probability that the difference between means reflects random error.
Answer: D
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As a task becomes more complex, the optimal level of arousal to perform the task best
a. increases. b. stays the same. c. first decreases and then increases. d. decreases.
Which section of the Stanford-Binet (SB5) would have questions similar to the following: "If you have 30 oranges and give 5 oranges to each of your 3 brothers, how many oranges will you have left?"
a. fluid reasoning b. working memory c. quantitative reasoning d. visual-spatial processing
Which of the following is most likely to improve performance on an exam?
A) using maintenance rehearsal instead of elaborative rehearsal B) taking a practice test before hand C) avoiding "over studying" the material D) studying from small stacks of flashcards instead of one big stack.
By the time we reach 80 years of age, our brain weights an average of 5% less than it did when we were younger adults
Indicate whether this statement is true or false.