Question
Part B: Hypothesis testing using paired-samples t-test 3. A total of 6 people take a cognitive test before and after consuming alcohol. Below are their
Part B: Hypothesis testing using paired-samples t-test
3. A total of 6 people take a cognitive test before and after consuming alcohol. Below are their scores. Assuming that scores are predicted to decrease following alcohol consumption, conduct a paired-samples t-test and compare it to the critical t-value to determine if the difference is significant. Assume a one-tailed hypothesis with = .05. Based on these results what can we infer about the effect that alcohol had on peoples' scores on the test? (3 marks)
Before After
Person 1 20 14
Person 2 26 23
Person 3 20 22
Person 4 18 13
Person 5 27 20
Person 6 26 21
Calculate the effect size (i.e., Cohen's d) and indicate the relative size of the effect. (1 mark)
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started