Tutorial Exercise (a) Suppose n = 6 and the sample correlation coefficient is r = 0.870. Is r significant at the 1% level of significance (based on a two-tailed test)? (b) Supposen = 10 and the sample...

Extracted text: Tutorial Exercise (a) Suppose n = 6 and the sample correlation coefficient is r = 0.870. Is r significant at the 1% level of significance (based on a two-tailed test)? (b) Supposen = 10 and the sample correlation coefficient isr = 0.870. Is r significant at the 1% level of significance (based on a two-tailed test)? (c) Explain why the test results of parts (a) and (b) are different even though the sample correlation coefficient r = the same in both parts. Does it appear that sample size plays an important role in determining the significance of a correlation coefficient? Explain. 0.870 is