Significance of the correlation coefficient
Test the significance of the correlation coefficient r at a = 0.05 for the data below.
X values 55 61 70 78 88
Y values 89 95 105 110 115
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One diver runs off the edge of the cliff, tucks into a "ball," and rotates on the way down with an average angular speed of 1.6 rev/s. Ignore air resistance and determine the number of revolutions she makes while on the way down.
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