Amazon Applied Science Intern interview questions

After the OA, there was a phone interview. I was asked many questions on ML basics like formula for the logistic regression model, difference between l1 and l2 regularization and then about my research. I had difficulty in understanding the interviewer's questions/responses to my questions due to accent issues. I was also a little nervous during the beginning that probably affected my performance. I think one should prepare stories about every leadership principle since I had difficulty thinking of one on the spot.