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Which of the following terms are included in a 95% confidence interval for the difference between...

Which of the following terms are included in a 95% confidence interval for the difference between two means found from a sample of 25 for each sample?

a. the mean

b. T value for the df of 49, at two tail .05

c.all of these are used

d. only a and c

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TOPIC:Confidence interval for the difference between the population means.

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