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OpenStudy (anonymous):
find the value of r and determine if a correlation exists at the indicated level of significance. x | y 8 |26 11|30 13|32 14|33 A.r=0.9710; correlation exists. B.r=0.9997; correlation exists. C.r=0.9710; correlation does not exist. D.r=0.9971; correlation exists.
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