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PowerPoint Chapter 8: CJC/Soc Stats S2020 In-... Mind Tap Cengage Learning A random sample is selected from a normal po... how Q Search to Hypothesis Testing taned test WiLi a = .05. Answer + b. If the sample mean were M = 98, what sample size would be needed to be significant for a two- %3D tailed test with a = .05? Answer + 10. In a study examining the effect of alcohol on reaction time, Liguori and Robinson (2001) found that even moderate alcohol consumption significantly slowed response time to an emergency situation in a driving simulation. In a similar study, researchersmeasured reaction time 30 minutes after participants consumed one 6-ounce glass of wine. Again, they used a standardized driving simulation task for which the regular population averages u = 400 msec. The distribution of reaction times is approximately normal with o = 40. Assume that the researcher obtained a sample mean of M = 422 for then = 25 participants in the study. %3D a. Are the data sufficient to conclude that the alcohol has a significant effect on reaction time? Use a two-tailed test with a = .01. b. Do the data provide evidence that the alcohol significantly increased (slowed) reaction time? Use a one-tailed test with a = .05. c. Compute Cohen's d to estimate the size of the effect. unhorg gitod in the previous problem (Liguori & Robinson, 2001) also examined the effect of

PowerPoint Chapter 8: CJC/Soc Stats S2020 In-... Mind Tap Cengage Learning A random sample is selected from a normal po... how Q Search to Hypothesis Testing taned test WiLi a = .05. Answer + b. If the sample mean were M = 98, what sample size would be needed to be significant for a two- %3D tailed test with a = .05? Answer + 10. In a study examining the effect of alcohol on reaction time, Liguori and Robinson (2001) found that even moderate alcohol consumption significantly slowed response time to an emergency situation in a driving simulation. In a similar study, researchersmeasured reaction time 30 minutes after participants consumed one 6-ounce glass of wine. Again, they used a standardized driving simulation task for which the regular population averages u = 400 msec. The distribution of reaction times is approximately normal with o = 40. Assume that the researcher obtained a sample mean of M = 422 for then = 25 participants in the study. %3D a. Are the data sufficient to conclude that the alcohol has a significant effect on reaction time? Use a two-tailed test with a = .01. b. Do the data provide evidence that the alcohol significantly increased (slowed) reaction time? Use a one-tailed test with a = .05. c. Compute Cohen's d to estimate the size of the effect. unhorg gitod in the previous problem (Liguori & Robinson, 2001) also examined the effect of

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PowerPoint Chapter 8: CJC/Soc Stats S2020 In-... Mind Tap Cengage Learning A random sample is selected from a normal po... how Q Search to Hypothesis Testing taned test WiLi a = .05. Answer + b. If the sample mean were M = 98, what sample size would be needed to be significant for a two- %3D tailed test with a = .05? Answer + 10. In a study examining the effect of alcohol on reaction time, Liguori and Robinson (2001) found that even moderate alcohol consumption significantly slowed response time to an emergency situation in a driving simulation. In a similar study, researchersmeasured reaction time 30 minutes after participants consumed one 6-ounce glass of wine. Again, they used a standardized driving simulation task for which the regular population averages u = 400 msec. The distribution of reaction times is approximately normal with o = 40. Assume that the researcher obtained a sample mean of M = 422 for then = 25 participants in the study. %3D a. Are the data sufficient to conclude that the alcohol has a significant effect on reaction time? Use a two-tailed test with a = .01. b. Do the data provide evidence that the alcohol significantly increased (slowed) reaction time? Use a one-tailed test with a = .05. c. Compute Cohen's d to estimate the size of the effect. unhorg gitod in the previous problem (Liguori & Robinson, 2001) also examined the effect of
Transcribed Image Text:PowerPoint Chapter 8: CJC/Soc Stats S2020 In-... Mind Tap Cengage Learning A random sample is selected from a normal po... how Q Search to Hypothesis Testing taned test WiLi a = .05. Answer + b. If the sample mean were M = 98, what sample size would be needed to be significant for a two- %3D tailed test with a = .05? Answer + 10. In a study examining the effect of alcohol on reaction time, Liguori and Robinson (2001) found that even moderate alcohol consumption significantly slowed response time to an emergency situation in a driving simulation. In a similar study, researchersmeasured reaction time 30 minutes after participants consumed one 6-ounce glass of wine. Again, they used a standardized driving simulation task for which the regular population averages u = 400 msec. The distribution of reaction times is approximately normal with o = 40. Assume that the researcher obtained a sample mean of M = 422 for then = 25 participants in the study. %3D a. Are the data sufficient to conclude that the alcohol has a significant effect on reaction time? Use a two-tailed test with a = .01. b. Do the data provide evidence that the alcohol significantly increased (slowed) reaction time? Use a one-tailed test with a = .05. c. Compute Cohen's d to estimate the size of the effect. unhorg gitod in the previous problem (Liguori & Robinson, 2001) also examined the effect of
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