# Hypothesis Testing for Samples

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Hypothesis testing: Please help me with the sample problem 1 (two attachments, page 2 and 3).

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http://www.sunflowerlabs.com/samples/c2fecd130002.GIF

http://www.sunflowerlabs.com/samples/c2fecd130003.GIF

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##### Solution Summary

The solution discusses Anova, null hypothesis and critical value for tar brand A and tar brand B.

##### Solution Preview

The first thing you have to know is what test should be done. In this case, you are seeing if there is a difference in the amount of tar between a few brands. Hence, you have to do an ANOVA (analysis of variance)

Therefore, the Null hypothesis is:

(in words)

The Tar in brand A is equal to the tar in brand B which equals the tar in Brand C which is equal to tar of brand D

A=B=C=D

The alternative hypothesis the tar in ...

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