Why it is generally impossible to calculate exactly the power of an experiment. If the the...
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Why it is generally impossible to calculate exactly the power of an experiment.
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If the the probability of committing a type-2 error is 7%. What is the power of the experiment?
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What are two ways you can increase the power of an experiment.
Homework Answers
1. Power of a test is the probability of rejecting the null hypothesis correctly, ie rejecting it when it is false. Since power = 1- probability of making type II error, we generally get the best approximate value and not the exact value.
2. Power = 1- probability of making type II error= 1-0.07= 0.93 ie 93%
3. Two ways to increase power:
a) Increases sample size n of the test (so that random error is reduced)
b) Increase the significance level alpha
Add Answer to:
Why it is generally impossible to calculate exactly the power of
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QUESTION 5 The power of the statistical test is zero (0) when the mean is 52,...
QUESTION 5
The power of the statistical test is zero (0) when the mean is
52, the sample size is 25, and the standard deviation is 2, and the
probability of committing Type II error when P is one (1) (previous
problem).
True
False
5 5
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QUESTION 5
The power of the statistical test is zero (0) when the mean is
52, the sample size is 25, and the standard deviation is 2, and the
probability of committing Type II error when P is one (1) (previous
problem).
True
False
5 5
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