To test whether extracurricular activity is a good predictor of college success, a college administrator records whether students participated in extracurricular activities during high school and their subsequent college freshman GPA.Extracurricular

ActivityCollege

Freshman GPAYes3.50Yes3.38Yes3.87Yes3.66No2.93No3.88No3.37No2.73No3.84No2.77

(a) Code the dichotomous variable and then compute a point-biserial correlation coefficient. (Round your answer to three decimal places.)

(b) Using a two-tailed test at a 0.05 level of significance, state the decision to retain or reject the null hypothesis.Hint:You must first convertrto at-statistic.Retain the null hypothesis.

Reject the null hypothesis.