Research Scenario #2: A researcher wanted to study the effect of alcohol on reac

Question

Research Scenario #2: A researcher wanted to study the effect of alcohol on reaction time. She hypothesized that alcohol will INCREASE reaction time (participants will take longer to react). She selected a sample of n= 36 participants from Rutgers University. The 36 participants each consumed a 6-ounce glass of wine. Thirty minutes later, the researcher measured each participant’s reaction time, using a standardized driving simulation task for which the regular population has a µ = 400 msec reaction time with a = 48. The reaction time mean for the sample was M= 412 msec. Are the data sufficient to conclude that the alcohol significantly increased reaction time? Based on the above research scenario, please answer the following questions:

1. Name the population: ____________________________________

2. Name the sample: ________________________________

3. What is the independent variable? ___________________

4. What is the dependent variable? ________________________

5. What is the appropriate hypothesis test? __________________

6. What two means are you comparing in this test? _____________________________

7. Please calculate the appropriate hypothesis test using all four steps:

Step 1:

Step 2:

Step 3:

Step 4: _______________________________

Write the statistical statement for the results: __________________________________

Interpret your results (relating back to the hypothesis): _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Is there a probability of Type I error? Yes ____ No_____

Is there a probability of Type II error? Yes ____ No____

If appropriate, please compute effect size: Answer: _______

Explanation / Answer

1. Name the population: pupil in Rutgers University

2. Name the sample: 36 participants from Rutgers University

3. What is the independent variable? alcohol

4. What is the dependent variable? reaction time

PS we are directed to do the first 4 parts if question with multiple parts is posted

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