A random sample of 27 pairs of observations from a normal population gives a. correlation coefficient of 0.43 (a) Is it likely that the variables in the population are uncorrelated? Use =0.05. (b) Construct a 95% confidence interval for . Click here to enter answer of Karl Pearson's correlation X nt r for fwo-failed test A random sample of 27 pairs of observations from a normal population gives a. correlation coefficient of 0.43 (a) Is it likely that the variables in the population are uncorrelated? Use =0.05. (b) Construct a 95% confidence interval for . Click here to enter answer of Karl Pearson's correlation X nt r for fwo-failed test