إحـــــــــــــــــــ ـــــــــــstatـــــــــــ.ـــــــصـــــــــــــــ ـــآآء... |!~

[sO0SO0]

عندي سؤاالين ,,

1- the probability of randomlyselecting 3 science books and 4 math books from 8science books and 9 math books is :

الجواب : 0.363

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2- the correlation coefficient between the number of absences and the final grade of stydents in the statistics class might be

الجواب : close to -1

طريقه الحل لا هنتمـ :)