Question: A sample data set produced the following information. n = 12, x = 66, y = 588, xy = 2244 x2 = 396, and y2

A sample data set produced the following information.
n = 12, ∑x = 66, ∑y = 588, ∑xy = 2244
∑x2 = 396, and ∑y2 = 58,734
a. Calculate the linear correlation coefficient r.
b. Using a 1% significance level, can you conclude that is negative?

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