METHODS OF DATA ANALYSIS
DECISION MAKING WITH HYPOTHESIS TESTING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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By taking a level of significance of 5% it is the same as saying
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We are 5% confident the results have not occurred by chance
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We are 95% confident that the results have not occurred by chance
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We are 95% confident that the results have occurred by chance
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None of the above
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Explanation:
Detailed explanation-1: -In null hypothesis testing, this criterion is called (alpha) and is almost always set to . 05. If there is less than a 5% chance of a result as extreme as the sample result if the null hypothesis were true, then the null hypothesis is rejected. When this happens, the result is said to be statistically significant .
Detailed explanation-2: -If you are using a significance level of 0.05, a two-tailed test allots half of your alpha to testing the statistical significance in one direction and half of your alpha to testing statistical significance in the other direction. This means that .025 is in each tail of the distribution of your test statistic.
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