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The following information is from a simple linear regression to estimate the energy content (calories) of a muesli bar, based on the protein content (grams):

The following information is from a simple linear regression to estimate the energy content (calories) of a muesli bar, based on the protein content (grams):

(Energy content) =65.31+0.92 Protein

r2 = 0.68

n = 38

What is the value of the correlation coefficient?

Please give your answer correctly rounded to two decimal places.

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