10. You conduct a two­sided hypothesis test for the difference between two means

Question

10. You conduct a two­sided hypothesis test for the difference between two means based on a matched pairs comparison between two data sets of size 15, and get a t value of 2.55. Which of the following is true for this test?

a. This finding is significant at neither the .05 nor the .01 levels.

b. This finding is significant at the .05 level but not at the .01 level.

c. This finding is significant at the .01 level but not at the .05 level.

d. This finding is significant at both the .05 and the .01 levels.

e. You need to know the sample standard deviations in order to answer this question

Explanation / Answer

t cal=2.55 and degrees of freedom=14

Now P value at 2.55 with 14 df is 0.023117

P value > 0.01 hence it is not significant but P <0.05 It is significant

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