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Decides confidence level in a hypothesis test; Factors

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Who decides what the confidence level in a hypothesis test should be and based on what factors?

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Solution Summary

The expert decides the confidence level in a hypothesis test. The factors required are provided.

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Confidence level in a hypothesis test is key when establishing a study. For example, there is a huge difference between having a confidence interval of 0.99 and one of 0.95.

In the 0.99 case, we are stating that we are 99% sure that the results of our study are actually due to the effect that we are examining, and not due to chance.

In the 0.95 case, we are stating that we are 95% sure that the results of our study are actually due to the effect that we are examining, and not due to chance.

This is a difference. Imagine a study where we ...

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