Select the 99% CI of mean differences using the following: df = 9 SE = 4.2 Mean difference = 5.5 a. (-10.16, 15.16) b. (2.21, 6.31) c. (-8.15, 19.15) d. (-7.22, 18.14)
Added by Daniel L.
Step 1
Step 1: Calculate the margin of error (ME) using the formula ME = t * SE, where t is the critical value for a 99% confidence interval with df = 9. Show more…
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