Regardless of which sample size estimation method a researcher chooses, he or she must acknowledge that sample size, effect size, and power are dependent on one another and that in order to estimate or determine one, information about the other two is needed. A wealth of information, statistical software, and web resources are available to help researchers determine the appropriate sample size needed for their statistical studies so that this important task – as daunting as it may seem – is not overlooked or neglected altogether.
There is a significant difference in the mean tensile bond strength (Newtons) of the three groups i.e. μ1 ≠ μ2 ≠ μ3