ดูต้นฉบับสำหรับ Probstat/week6 practice 2

: ''This is part of [[probstat]].''

== Birthday problem ==
Please watch the clips ([http://www.youtube.com/watch?v=TcAbDItb2RM part 1], [http://www.youtube.com/watch?v=E9-lt3r2oJY part 2]) first, and think about how to use the balls-and-bins experiment to analyze the birthday problem.

After you have thought about this problem, please go on to [[probstat/birthday practice|the actual practice]].

== Coupon collector's problem ==
Please watch the 1st clip ([http://www.youtube.com/watch?v=TcAbDItb2RM part 1]), and think about how to use the balls-and-bins experiment to analyze the coupon collector's problem before watching the 2nd clip ([http://www.youtube.com/watch?v=E9-lt3r2oJY part 2]).

If you have tried to use the approach we used to analyze the fullest bin to find the upperbound for the number balls, please proceed to see the [[probstat/coupon practice|the actual practice]] for the coupon collector's problem.