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Question
As mentioned in earlier exercise. Now do that assignment without assuming that the population standard deviations are the same.
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VerifiedAnswered 1 year ago
Answered 1 year ago
Step 1
1 of 24For part a):
The confidence interval for the difference between two populations means when samples are large enough and drawn from two populations with unknown and unequal standard deviations is given by
where and are the means of the two samples, is the estimator of standard deviation of , and is found from the distribution table for the given confidence level and calculated degrees of freedom.
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