Unlucky 13 Statistics Additional The mean of twelve integers is 15. When a thirteenth and fourteenth integer are included, the mean is 0. What are the thirteenth and fourteenth integers? (Source: Adapted from Mathematics Teaching in the Middle School, Sep 1997) October 29, 2018/by Kym Welty http://intermath.org/wp-content/uploads/2018/03/logo.jpg 0 0 Kym Welty http://intermath.org/wp-content/uploads/2018/03/logo.jpg Kym Welty2018-10-29 12:16:262019-01-18 16:13:46Unlucky 13