Can you share your lab ID with me ? In the assignment, when you click the top right “Help” button, a panel will open and your lab ID will be shown at the bottom.
While checking your notebook, I found errors in Ex 1, and in Ex 3.
In Ex 3, you had added an extra line of code, setting up random seed. Kindly refrain from adding extra lines of code in the assignments. Only provide code which is asked for.
I have left comments in both of the exercises for your reference.