A researcher wishes to determine if there is any correlation between the scores on a reading test with those on a writing test, in other words does writing ability depend on reading ability? He gives both tests to seven people selected at random and the scores are recorded below.Reading Test6653220Writing Test10886531a) What is the explanatory variable? ________________ What is the response variable? _____________b) What is the least squares regression equation? _______________________________c) What is the correlation coefficient, r?_____________ Interpret this result.d) What is the coefficient of determination, r2? ___________Interpret this result e) Suppose you received a score of 4 on the reading test, predict the score on the writing test.___