Significant correlation and the equation
The variables x and y have a significant correlation, and the equation of the regression line describing the relationship between them is y = -5.5x - 9.9. Find the predicted value for y given x = -3.8.
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Calculate the correlation coefficient r for the data pairs given below.
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One card is chosen at random and inserted into another deck. This deck is shuffled and one card is drawn. What is the probability which you get a heart?
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