Unethical re- searchers know that one can cheat with hy- pothesis testing. That

Question

Unethical re- searchers know that one can cheat with hy- pothesis testing. That is, they know that a re- searcher can stack the deck in his or her favor, making it easier to reject the null hypothesis. (The best researchers always stack the deck against themselves, knowing that their results are more reputa- ble if they reject the null hypothesis even under conservative conditions). If you wanted to make it easier to reject the null hypothesis, what are two specific things you could do? tween your samples? with hypothesis testing? Would it change the actual difference be- Why is this a potential problem 7

Explanation / Answer

Solution:

The null hypothesis is rejected on the basis of one of three reasons.
1.If the test statistic value is less than the critical value, then reject the null hypothesis.
2.If the P-value is less than the specified level of significance, then reject the null hypothesis.
3.If the confidence interval does not include 0, then reject the null hypothesis.
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For smaller samples, the normality can be an issue. If the data are not normally distributed, the p-value may be inaccurate with small samples. If the sample size is less than 30, normality can be an issue. If the data are not normally distributed, the p-value may be inaccurate with small samples. Because normality cannot be reliably checked with small samples, you should use caution when interpreting the test results.
If there are unusual data points, then unusual data can have a strong influence on the results. So this is a potential problem with the hypothesis testing

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