Question: Using the estimation results in Question 5, test the null hypothesis that the mean test score in districts with low student-teacher ratio (STR <17)

Using the estimation results in Question 5, test the null hypothesis that

 the mean test score in districts with low student-teacher ratio (STR  

Using the estimation results in Question 5, test the null hypothesis that the mean test score in districts with low student-teacher ratio (STR

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