Question

Hypothesis Test. Ten pilots performed crisis problem-solving tasks with response time measured in seconds. Each pilot first performed the tasks in a completely sober condition and, 3 hours later, repeated similar tasks after consuming two servings of alcohol. Evaluate whether alcohol has negative effects on performance leg. times to perform critical tasks increase at the 0.05 level of significance. The data are given below. w 20 3213 2012 20 LD 21 20 2 Beas 20 31.0 31 3:9.5 20 20 44 3.6 Question. What is the correct statistical procedure? t-test Oz-test Independent Samples t-test Matched Pairs t-test

Answer 1

Since sample size is less than 30, t-test statistics is appropriate to compare effect of alcohol on performance.

Also, hypothesis states that comparison of performance before and after consumption of alcohol hence matched paired t-test is relevant in testing hypothesis.

Answer: Option D Matched pairs t-test