All are true about P-value except-

A. It is the probability of committing type I error

B. I s equal to I-ss

C. Is the chance that the presence of difference is concluded when actually there is none

D. When p-value is less than a, the result is statistically significant

Correct Answer: I s equal to I-ss

Description: <p> Is equal to 1-ss. Type 1 error is usually fixed in advance by the choice of level of significance employed in the test. Power of a test:1-ss -is probability of rejecting a null hypothesis when a predetermined clinically significant difference is indeed present. -power can be increased by increasing the no. of subjects in a trial. Reference:Simple Biostatistics by Indrayan & Indrayan,1st edition,page no.155. <p>

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