updated the plots that didn't work

[OhadZivan]

fixed the students questions to match the TA ones

[review-notebook-app[bot]]

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[jlpearso]

@WesleyTheGeolien were these changes that @OhadZivan made due to the formatter? Also @OhadZivan we will be generating the student notebooks from the root tutorials, we just have not done this day yet. So as long as the root files are modified we will have updated student books.

[WesleyTheGeolien]

fixed in #245