Which one is the correct statement? Choose all
applied.
A. We can increase the power of a test by decreasing type 2
error.
B. power of a test = 1- type 2 error.
C. We can increase the power of a test by increasing type 1
error.
D. We can increase the power of a test by increasing the size of
random sample.
We know that,
Power = P(type I error)
Power = 1 - P(type II error)
Therefore,
A. We can increase the power of a test by decreasing type 2 error.
B. power of a test = 1- type 2 error.
C. We can increase the power of a test by increasing type 1 error.
D. We can increase the power of a test by increasing the size of random sample.
All the option are correct.
Since, type II error is power, by decreasing the type 2 error we can increase power
B. Is also correct
C. Is also correct, since power is directly proportional to type I error, option C. is also correct.
D. It is also correct, since the power can be increased by increasing the sample size
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