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Error in Random Variables Q4.1(d)

Conor Hughes — Thu, 24 Sep 2026 09:08:48 GMT

Hi all,

Thanks to an eagle eyed student for noticing there was an error in my solution to Q4.1(d) in the Random variables refresher. I failed to include the probability that X is equal to 9. Hence the final answer should be 0.4623. It has now been updated. Apologies.

Conor

Typo in Random Variables Q2.2

Conor Hughes — Tue, 22 Sep 2026 12:39:47 GMT

Hi all,

I got this question outside of the forum. In the video solution to Question 2.2(iv) in Random Variables section, seen here, I took a 4 outside of the integral but then forgot to multiply by it at the end. So, the final answer should be divided by 6 not 24. I apologise for any confusion.

Thanks,

Conor

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