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 al 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. svibb C. The amount of alcohol consumed by males and females in the past month is 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 A. 134.56 C. 33.408 D. 5.780 20. What is the value of the test statistics? В. 1.558 A. 1.098 C. 0.270 D. 0.776 21. With to.025=±2.011; what would be your decision? A. There is no sufficient data to make a decision B. Failed to reject the null hypothesis C. Reject the null hypothesis D. Either A or B
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 al 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. svibb C. The amount of alcohol consumed by males and females in the past month is 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 A. 134.56 C. 33.408 D. 5.780 20. What is the value of the test statistics? В. 1.558 A. 1.098 C. 0.270 D. 0.776 21. With to.025=±2.011; what would be your decision? A. There is no sufficient data to make a decision B. Failed to reject the null hypothesis C. Reject the null hypothesis D. Either A or B
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Chapter1: Combinatorial Analysis
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Transcribed Image 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 mavimum 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 70 lev
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
A. 134.56
C. 33.408
D. 5.780
mali-
20. What is the value of the test statistics?
A. 1.098
В. 1.558
C. 0.270
D. 0.776
21. With to.025=±2.011; what would be your decision?
A. There is no sufficient data to make a decision
B. Failed to reject the null hypothesis Drs D. Either A or B
C. Reject the null hypothesis
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