<prompt> All are true about P-value except ?It is the probability of commiting type I errorIs equal to 1-0Is the chance that the presence of difference is concluded when actually there is nonewhen p-value is less than a, the result is statistically significant  <response>: Ans. is b i.e. Is equal to 1-0 P value is equal to the probability of commiting type I error, i.e. observing a difference when there is no difference in real. When P value is less than signficance level a , the results are statistically significant. Significance level c is fixed in advance. For example, significance level of study is study is fixed at 0.05 and the p value of test type I error is 0.027 0.05, then the result is considered as statistically significant. That means, the maximum tolerable limit of type I error significance level of a study is fixed in advance and the usual value is 0.05. That means . 0.05 of type I error is acceptable and if a study has 0.05 type I error, the result is statistically significant. 