[{"Name":"The Big Idea","TopicPlaylistFirstVideoID":0,"Videos":[{"Watched":false,"Name":"The Big Idea","Duration":"3m 35s","ID":13597}],"ID":64533},{"Name":"Known Population Variance","TopicPlaylistFirstVideoID":0,"Videos":[{"Watched":false,"Name":"Explanation and Example","Duration":"7m 22s","ID":13615},{"Watched":false,"Name":"Exercise 1","Duration":"2m 1s","ID":13616},{"Watched":false,"Name":"Exercise 2","Duration":"7m 44s","ID":13617},{"Watched":false,"Name":"Exercise 3","Duration":"6m 57s","ID":13618},{"Watched":false,"Name":"Exercise 4","Duration":"7m 50s","ID":13619},{"Watched":false,"Name":"Exercise 5","Duration":"7m 48s","ID":13620},{"Watched":false,"Name":"Exercise 6","Duration":"5m 46s","ID":13621},{"Watched":false,"Name":"Exercise 7","Duration":"2m 20s","ID":13622},{"Watched":false,"Name":"Exercise 8","Duration":"7m 37s","ID":13623}],"ID":64534},{"Name":"Unknown Population Variance","TopicPlaylistFirstVideoID":0,"Videos":[{"Watched":false,"Name":"Unknown Population Variance","Duration":"5m 10s","ID":13624},{"Watched":false,"Name":"Exercise 1","Duration":"6m 13s","ID":13625},{"Watched":false,"Name":"Exercise 2","Duration":"5m 9s","ID":13626},{"Watched":false,"Name":"Exercise 3","Duration":"5m 24s","ID":13627},{"Watched":false,"Name":"Exercise 4","Duration":"5m 27s","ID":13628},{"Watched":false,"Name":"Exercise 5","Duration":"1m 53s","ID":13629},{"Watched":false,"Name":"Exercise 6","Duration":"1m 57s","ID":13630}],"ID":64535}]

[{"ID":64533,"Videos":[13597]},{"ID":64534,"Videos":[13615,13616,13617,13618,13619,13620,13621,13622,13623]},{"ID":64535,"Videos":[13624,13625,13626,13627,13628,13629,13630]}];

[13624,13625,13626,13627,13628,13629,13630];

1

2