Find confidence interval-populations normally distributed


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Q: Construct a 95% confidence interval to estimate μ1- μ2 by using the following data. Assume the populations are normally distributed.

Sample 1

Sample 2

x‾1 =

74.6

x‾2 =

70.9

s12 =

10.5

s22  =

11.4

n1=

18

n2 =

19

 

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Basic Statistics: Find confidence interval-populations normally distributed
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