Which of the following statements are true?

Select the correct code. (a) The coefficient of rank correlation has the same limits as the Karl Pearson’s coefficient of correlation. (b) The coefficient of correlation is independent of the change of origin but not of scale. (c) The covariance between X and Y is defined as ∑xy/n where x=(X-X), y= (Y-Y) and n = […]

Select the correct code

Statement I:  If the alternative hypothesis is as Ha: µ≠µ0; a researcher requires two tailed test in hypothesis-testing Statement II: The mean of the sampling distribution of mean is not equal to the parametric value of mean.