Rashidah Paujah @ Ismail, Nor, Fadzilah Abdol Razak, and Norhayati Baharun. “Investigating Students’ Difficulties in Understanding Confidence Intervals in Linear Regression Models”. International Journal of Engineering and Technology 7, no. 4.33 (December 9, 2018): 60–64. Accessed August 17, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/23485.