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# 4 questions on Hypothesis testing and SSR, SST

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1.Explain how you decide what statement goes into the null hypothesis and what statement go into the alternative hypothesis.
2. What is a critical value?
3. What is Alpha and how is it related to the p-value?

https://brainmass.com/statistics/hypothesis-testing/questions-hypothesis-testing-ssr-sst-180668

#### Solution Preview

1. Explain how you decide what statement goes into the null hypothesis and what statement go into the alternative hypothesis.

Null hypothesis is the one that you always want to reject. Generally, null hypothesis signify that a parameter is equal to a certain value (for example: average age of students in class is 15 years) or that the external variable does not influence the variable of interest (for example advertising does not influences sales). Mathematically, Null hypothesis is represented as the mean of one variable is equal to mean of other variable: 

Alternate hypothesis is the one that a researcher is always interested in and would like to accept. ...

#### Solution Summary

This posting contains 4 questions on Hypothesis testing and SSR, SST, Critical value, Alpha and p-value, R-square

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