Question: What would the null hypothesis be for the research question explored using simple linear regression in the previous question? There is a positive linear relationship

What would the null hypothesis be for the research question explored using simple linear regression in the previous question?

There is a positive linear relationship between GRE scores and grades.

There is a negative linear relationship between GRE scores and grades.

There is a linear relationship between GRE scores and grades that could be either positive or negative.

There is no linear relationship between GRE scores and grades.

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