For numbers 18 to 21: A study was conducted using 50 undergraduates at a large private university who volunteered to participate in the research as partial fulfillment of a course requirement. One of...

Extracted text: For numbers 18 to 21: A study was conducted using 50 undergraduates at a large private university who volunteered to participate in the research as partial fulfillment of a course requirement. One of the items studied was the maximum daily amount of alcohol consumed in the last month. Base on the data in the following table, are there differences between males and females in the maximum amount of alcohol consumed in any one day in the past month? Use 5 % level of significance. Assume equal variances. Alcohol consumed Male female Mean 8.2 5.6 Standard deviation 5.9 5.7 Number of students 20 30 18. Which of the following is the appropriate alternative hypothesis? A. There are more female participants than males B. The amount of alcohol consumed by males is higher than the amount consumed by the females. C. The amount of alcohol consumed by males and females in the past month is not the same. D. The amount of alcohol consumed by males and females in the past month is the same. 19. The pooled variance would be? В. 67.3 С. 33.408 D. 5.780 A. 134.56 20. What is the value of the test statistics? B. 1.558 C. 0.270 D. 0.776 A. 1.098 21. With to 025=±2.011; what would be your decision? A. There is no sufficient data to make a decision C. Reject the null hypothesis D. Either A or B B. Failed to reject the null hypothesis