Question

Question 7 (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 leg. times to perform critical tasks increase at the 0.05 level of significance. The data are given below. Soba 2B 2018 Question. The correct p-value is between 0.01 and 0.025, True False Question 8 (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 (eg. times to perform critical tasks increase) at the 0.05 level of significance. The data are given below. 2 B 29 30 Question. What is the correct statistical conclusion if the level of significance is 0.05? Fail to reject the null. Reject the null. Accept the null. None of these.

Answer 1

H0: There is no negative effects of alcohol on performance

H1: There is negative effects of alcohol on performance

Griven d = B-A a2 Before After el -1 & Winode 2-8 2.9 0.1 0.01 3.2 3.7 0.5 0.25 S = Ed²-nc)² 3.3 2.6 -0.7 0.49 3.8 2 4 2.6 3.5 S = 0.9 0.3 0.81 8.83-10(0.61) 2 3.2 3.5 9 2.9 0 0.09 O 0.49 2.6 s - 0.75 3 3.1 1.3 4.4 3.6 1.69 t = 2-6 0.61 rio 0.753 Ed 8.83 = 0.61 Ed² n It 2.5617 value o P 0.030] two-tailed test 9.4: P value is bot between 0.01 and 0.02 False 9.8 : p value 0.03 < 0.05 Reject null hypothesis