The following information was obtained from two independent samples selected from two normally distributed populations with unknown but **equal** standard deviations. n1=43; x1¯=74.17 s1=7.42 n2=65;...


The following information was obtained from two independent samples selected from two normally distributed populations with unknown but **equal** standard deviations.


n1=43;    x1¯=74.17  s1=7.42
n2=65;    x2¯=70.88;    s2=8.19
Find a point estimate and a 95% confidence interval for μ1−μ2


For the following, round all answers to no fewer than 4 decimal places.




























The point estimate of μ1−μ2 is:Answer
The lower limit of the confidence interval is:Answer
The upper limit of the confidence interval is:Answer
The margin of error for this estimate is:Answer
Test at the 0.05 significance level if μ1 is different than μ2
μ1is AnswerGreater thanNot significantly different thanLess than μ2


Jun 08, 2022
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