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Question on final quiz #9 II-A

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Question on final quiz #9 II-A
by Bober Yang - Saturday, February 20, 2021, 3:37 PM

I got this one wrong and the question asked for the probability of 10 but in the answer key, it is saying for 11.

I am not sure if it is right or wrong so here it is.

Can someone explain whether the answer key is wrong or I am still just wrong


Picture of John Lensmire
Re: Question on final quiz #9 II-A
by John Lensmire - Monday, February 22, 2021, 10:30 AM

Thanks for pointing this out. You are correct that event $B$ should be the sum is $10$. Note, however, that the rest of the solution is okay, as $B$ was correctly listed as $\{ (4,6), (5,5), (6,4)\}$.

Let us know if you have any additional questions.