AT&T; LTE 2:25 PM * 31% tamu.blackboard.com Lecture 12 Slides -1 tamu.blackboard

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AT&T; LTE 2:25 PM * 31% tamu.blackboard.com Lecture 12 Slides -1 tamu.blackboard.co...HW12_online [24... Search Textbook So.. Principles Of Biosta... 4. Pagano Chapter 14: Q9 5. Pagano Chapter 14: Q10 6. Pagano Chapter 14: Q12 7. Using the above code and the graphic output, the sample size is most likely to be to achieve about 80% of power with the level of the test being 0.1 and the mean difference being 5 A). 100 B). 120 C). 130 D). 145 E). 200 SAS Code: Graph output proc power; twosamplemeans test-diff meandiff= 5 6 stddev= 12 alpha -0.05 0.1 ntotal- 100 200 power = .; plot; run; Two-Sample t Test for Mean Difference 1,0 0.9 0.8 0.7 0.6 0.5 100 120 140 160 200 Total Sample Size Alpha005 Mean Diff o 5 + 6

Explanation / Answer

Result:

For mean difference of 5, the power curve with 80% power cut the x axis at sample size of 100.

The required sample size = A). 100.

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