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Fred and George played fifteen (15) games of goal over the course of a year. Fred average (sample mean) a score 76, only four points above par and George average (sample mean) a score of 79, only seven points above par; Fred's sample standard deviation of 10 and George's sample standard deviation of 7. At the 5% level of significance, test if there is any significant difference (either way) between Fred and George.
H0: μFred - μGeorge = 0 OR H0: μFred = μGeorge
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What can power analysis be used to calculate?
Power analysis can be used to calculate statistical significance. It compares the null hypothesis with the alternative hypothesis and looks for evidence that can reject the null hypothesis.
Explain what is meant by null hypothesis?
The null hypothesis is an hypothesis about some population parameter. The goal of hypothesis testing is to check the viability of the null hypothesis in the light of experimental data. Based on the data, the null hypothesis either will or will not be rejected as a viable possibility.
What does the researcher hope to do with the null hypothesis (the opposite of the research hypothesis)?
Be able to reject the null hypothesis and accept the research hypothesis
What is a null hypothesis?
The null hypothesis is the statement that there is no relationship between two observations.
When you accept the Null Hypothesis you are certain that the Null Hypothesis is correct?
No, you are never certain.
