<prompt> Power of study can be increased byIncreasing a errorIncreasing b errorDecreasing a errorDecreasing b error  <response>: Power of a Test: Is probability of rejecting a Null hypothesis when a predetermined clinically significant difference is indeedpresent Measures the ability to demonstrate an association, when one really exists Power of a statistical test: 1 b 1 probability of Type II error Power of a statistical test is complimentary to b probability of Type II error Power of a statistical test is a numeric representation of: Sensitivity Power of a statistical test can be increased by:1. Increasing the no. of subjects in a trial sample size2. Reducing b probability of Type II error3. Increasing sensitivity Power of a statistical test is also used for calculation of sample size for a study 