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it's important - give your best please :) Test the claim that the samples come from...

it's important - give your best please :)

Test the claim that the samples come from populations with the same mean. Assume that the populations are normally distributed with the same variance.

Given the sample data below, test the claim that the population have the same mean. Use a significance level of 0.05.

Brand A Brand B Brand C Brand D
n=16 n=16 n=16 n=16
=2.09 =3.48 =1.86 =2.84
s=0.37 s=0.61 s=0.45 s=0.53
Math   Statistics-And-Probability   
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