Question
Reaction time ~ For a special back-to-school event, the student council at a small liberal arts college invited a panel of 7 recent graduates to
Reaction time ~ For a special back-to-school event, the student council at a small liberal arts college invited a panel of 7 recent graduates to help demonstrate to students the adverse effect of alcohol on reaction time. The reaction times (in seconds) before and after consuming four alcoholic drinks are shown in the table.
Participant | Before | After | Difference = After - Before |
1 | 0.37 | 0.4 | 0.03 |
2 | 0.42 | 0.49 | 0.07 |
3 | 0.38 | 0.44 | 0.06 |
4 | 0.33 | 0.4 | 0.07 |
5 | 0.37 | 0.48 | 0.11 |
6 | 0.39 | 0.45 | 0.06 |
7 | 0.33 | 0.34 | 0.01 |
Round all calculated values to 4 decimal places as appropriate.
1. Which set of hypotheses should we use to conduct a paired difference test to determine if drinking increases reaction time? I got this right.
B. H0:diff=0H0:diff=0 vs. Ha:diff>0Ha:diff>0
2. What conditions must be met if we want to perform this hypothesis test? Select all that apply: I got these right: B. Large samples and no extreme outliers. AND C. Independently sampled pairs.
3. Assuming the conditions for the hypothesis test are met, find the test statistic and the p-value.
test statistic =??? p-value = ????
Round all calculated values to 4 decimal places as appropriate.
4. Based on the p value we have ???? evidence that the null model is not a good fit for our observed data.
Little OR Some OR Strong OR Very Strong OR Extremely Strong
5. Construct a 99% confidence interval for the average change in reaction time.(??? , ???? )
Round all calculated values to 4 decimal places as appropriate.
ok This is what I have but it is the p value is wrong it is NOT .0014. can you please help me with the above problem.
t-Test: Paired Two Sample for Means A B C 1 t-Test: Paired Two Sample for Means 2 After Before 4 Mean 0. 428571429 0.37 5 Variance 0.002747619 0.001033333 6 Observations 7 7 7 Pearson Correlation 0.820972034 8 Hypothesized Mean Difference 0 9 df 6 10 It Stat 4.865804799 11 P(TStep by Step Solution
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