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Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to state whether or not the given r represents a significant linear correlation. Use a significance level of 0.05. 20) r = -0.174, n = 15 A) Critical values: r = +0.532, no significant linear correlation B) Critical values: r = +0.514, significant linear correlation C) Critical values: r = 0.514, no significant linear correlation D) Critical values: r = #0.514, no significant linear correlation 21) r = 0.812, n = 9 A) Critical values: r = -0.666, no significant linear correlation B) Critical values: r = #0.666, no significant linear correlation C) Critical values: r = 0.666, no significant linear correlation D) Critical values: r = #0.666, significant linear correlation