Confidence interval estimate of difference in sample means

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Reference no: EM13154534

Consider the following results for two samples randomly taken from two populations.

Sample A Sample B
Sample Size 150 150
Sample Mean 412 405
Sample Std Deviation 128 54

A. At a .01 level of significance, test whether there is a difference between the 2 sample means.

b. Construct a 99 percent confidence interval estimate of the difference between the two sample means.

Reference no: EM13154534

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