Tapia Moreno, Francisco Javier, and Hector Antonio Villa-Martinez. “Digital Learning Tools for Mobile Devices for Accomplish Hypothesis Testing of Statistical Parameters”. International Journal of Interactive Mobile Technologies (iJIM) 13, no. 06 (June 20, 2019): pp. 15–26. Accessed August 20, 2022. https://online-journals.org/index.php/i-jim/article/view/10436.