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10. A researcher would like to know if stress has a negative effect on memory performance....

10. A researcher would like to know if stress has a negative effect on memory performance. One group of participants was exposed to a stress inducing noise and the second group listened to a calming music. Afterwards, both groups were given a memory test. The researcher compared the average memory test scores of two groups. This study is an example of _____________.

  • A. an experiment

  • B. a quasi-experiment

  • C. a correlational study

  • D. None of the above.

11. If an instructor tells you that your score on the final exam corresponds to a z = 0.5 than _____.

  • A. your got a very high score on the final.

  • B. your got an average score on the final.

  • C. your got a low score on the final.

  • D. None of the above.

12.A researcher wants to examine the effectiveness of two types of classroom instruction. She designed two types of instruction for two different samples of students. Afterwards, both samples were given the same performance test and the test averages were compared. What statistical test should be used by the researcher to analyze the outcomes of this study?

  • A. Chi2 for Goodness of Fit.

  • B. T-test for dependent samples.

  • C. One-factor ANOVA for independent samples.

  • D. Pearson Correlation.

  • E. T-test for independent samples.

  • F. Chi2 for Independence.

Math   Statistics-And-Probability   
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10.A researcher would like to know if stress has a negative effect on memory performance. One group of participants was exposed to a stress inducing noise and the second group listened to a calming music. Afterwards, both groups were given a memory test. The researcher compared the average memory test scores of two groups. This study is an example of

C.A correlational study

11

If an instructor tells you that your score on the corresponds to a z = 0.5 than

B .your got an average score on the final

12.

A researcher wants to examine the effectiveness of two types of classroom instruction. She designed two types of instruction for two different samples of students. Afterwards, both samples were given the same performance test and the test averages were compared. T test for independent samples(E)should be used by the researcher to analyze the outcomes of this study..

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