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Arandom sample of 64 items is taken from the second

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Reference no: EM13582909

Question: A researcher desires to estimate the difference in means of two populations. To accomplish this, she takes a random sample of 81 items from the first population. The sample yields a mean of 168 with a variance of 324. A random sample of 64 items is taken from the second population yielding a mean of 158 with a variance of 625. Compute a 94% confidence interval for the difference in population means.

a) -0.27 to 14.27

b) 3.51 to 10.49

c) 1.25 to 12.75

d) 3.02 to 16.98

Reference no: EM13582909

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