Question

Question 6 (1 point) 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 le-g. times to perform critical tasks increase at the 0.05 level of significance. The data are given below. She 25 53 15 18 28 10 10 10 2 lime 2030 2038 39 35 20 26 6430 Question. What is the correct alternate hypothesis if the pilots' average gain score due to alcohol is indicated in the hypothesis statement by Hg ? H: Hg = 0 H: Hg > 0 H:Hg < 0 H: Hg 70

Answer 1

Each pilot first performed the tasks in a completely sobar manner. After consuming alcohol similar tasks are performed.

Researchers are interested to know whether alcohol has negative effect. That is time taken to complete the task after consumption of alcohol is greater than the time taken for that before consumption of alcohol.

That is average gain is positive.

Therefore the alternative hypothesis is

H_a : μ_g > 0

Therefore the correct option is option B.