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5. For a problem in which the observed value of t= 1.999 with 21 degrees of free- dom (two-tailed), may the null hypothesis be rejected at the .05 level? 6. "Based on the information in Question 5, the difference between the means is sta- tistically significant at the .05 level." Is this statement true or false? 7. "For a problem in which the observed value of t= 2.500 with 26 degrees of free- dom (two-tailed), the difference is significant at the .05 level but not at the .01 level." Is this statement true or false? 8. Using the information in Question 7, what decision should be made about the null hypothesis at the .05 level? If n= = 30 for one group and n = 32 for another group, what is the value of df for a t test on independent data?

5. For a problem in which the observed value of t= 1.999 with 21 degrees of free- dom (two-tailed), may the null hypothesis be rejected at the .05 level? 6. "Based on the information in Question 5, the difference between the means is sta- tistically significant at the .05 level." Is this statement true or false? 7. "For a problem in which the observed value of t= 2.500 with 26 degrees of free- dom (two-tailed), the difference is significant at the .05 level but not at the .01 level." Is this statement true or false? 8. Using the information in Question 7, what decision should be made about the null hypothesis at the .05 level? If n= = 30 for one group and n = 32 for another group, what is the value of df for a t test on independent data?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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level." Is this statement true or false? 5. For a problem in which the observed value of t= 1.999 with 21 degrees of free- 7. "For a problem in which the observed value of t 2.500 with 26 degrees of free- dom (two-tailed), may the null hypothesis be rejected at the .05 level? Worksheet 44 (continued) 6. "Based on the information in Question 5, the difference between the means is sta- Worksheet 44 (continued) a .ically significant at the .05 level." Is this statement true or false? dom (two-tailed), the difference is significant at the .05 level but not at the .01 8 Using the information in Question 7, what decision should be made about the null hypothesis at the .05 level? 9. If n= 30 for one group and n= 32 for another group, what is the value of df for a t %3D test on independent data? Solution section: false (you) 2.348 (mistake) .872 (lengthy) 2.447 (explain) true (did) .742 (it) 6.739 (does) no (why) 3.707 (always) reject it (it) yes (to) do not reject it (helpless) 62 (being) 60 (wrong) 61 (difficult)
Transcribed Image Text:level." Is this statement true or false? 5. For a problem in which the observed value of t= 1.999 with 21 degrees of free- 7. "For a problem in which the observed value of t 2.500 with 26 degrees of free- dom (two-tailed), may the null hypothesis be rejected at the .05 level? Worksheet 44 (continued) 6. "Based on the information in Question 5, the difference between the means is sta- Worksheet 44 (continued) a .ically significant at the .05 level." Is this statement true or false? dom (two-tailed), the difference is significant at the .05 level but not at the .01 8 Using the information in Question 7, what decision should be made about the null hypothesis at the .05 level? 9. If n= 30 for one group and n= 32 for another group, what is the value of df for a t %3D test on independent data? Solution section: false (you) 2.348 (mistake) .872 (lengthy) 2.447 (explain) true (did) .742 (it) 6.739 (does) no (why) 3.707 (always) reject it (it) yes (to) do not reject it (helpless) 62 (being) 60 (wrong) 61 (difficult)
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