Independent random sampling from two normally distributed populations gives the following results: nx = 64; x = 400; s x = 20 ny = 36; y = 360; s y = 25 Find a 90% confidence interval estimate of the...

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

nx
= 64;
x
= 400; sx
= 20

ny
= 36;
y
= 360; sy
= 25

Find a 90% confidence interval estimate of the difference between the means of the two populations.

May 19, 2022

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