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Two samples are taken with the following sample means, sizes, and standard deviations ¯x1 = 21...

Two samples are taken with the following sample means, sizes, and standard deviations
¯x1 = 21 ¯x2 = 29
n1 = 58 n2 = 56
s1 = 4 s2 = 3

Find a 87% confidence interval, round answers to the nearest hundredth.
< μ1-μ2 <

Math   Statistics-And-Probability   
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Answer #1

from above  87% confidence interval -9.01 < μ1-μ2 < -6.99

( please try -9.02 ; -6.98 if above comes wrong and revert)

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