The following output from MINITAB presents a confidence interval for the mean difference between matched pairs. a.
Question:
a. Is this a left-tailed test, a right-tailed test or a two-tailed test?
b. How many degrees of freedom are there?
c. Can you reject H0 at the a = 0.05 level?
Transcribed Image Text:
Paired T-Teat and CI: Before. After Paired T for Before After Before After Difference 12 2.67399 3.09085 95% confidence interval for mean difference: (0.71016, 4.63782) T-Test of mean difference 0 (vs ne 0): T-Value-, 3.00 P-Value Hean StDev 12 20.50337 9.69467 12 17.82398 6.36154 SE Mean 2.79861 183642 0.89225 0.012
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