I added brackets for the expectation operator since (if I remember correctly from last year), some students were unclear about what they were supposed to take the expectation of. I also removed the boldface for the expectation operator in question 10 for consistency with the other questions. I also included as comments in the .tex file to clarifying questions for questions 5 and 10c.
benthestatistician
commented
7 years ago
I added brackets for the expectation operator since (if I remember correctly from last year), some students were unclear about what they were supposed to take the expectation of. I also removed the boldface for the expectation operator in question 10 for consistency with the other questions. I also included as comments in the .tex file to clarifying questions for questions 5 and 10c.