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The Pennsylvania Refining Company is studying the relationship between the pump price of gasoline and the number of gallons sold. For a sample of 20...

The Pennsylvania Refining Company is studying the relationship between the pump price of gasoline and the number of gallons sold. For a sample of 20 stations last Tuesday the correlation was .78 .At the .01 significance level is the correlation in the population greater than 0?
t= .78-20.00/.01SQRT 20=?

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