Independent random sampling from two normally distributed populations gives the following results: nx = 81; x = 140; s2 x = 25 ny = 100; y = 120; s2 y = 14 Find a 95% confidence interval estimate of...

Independent random sampling from two normally distributed populations gives the following results:

nx
= 81;
x
= 140; s2x= 25

ny
= 100;
y
= 120; s2y= 14

Find a 95% confidence interval estimate of the difference between the means of the two populations.

May 08, 2022

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