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Mathematics Question Thread
ethan.lozevski:
Hey guys,
I have attached a question that has confused me a little. I used Ali's model and put all my solutions over 19, to sum up to 1 as a pdf requires. Please let me know if I am doing this question correctly. Thanks, guys.
fun_jirachi:
Welcome to the forums!
A few questions in return:
- What are the chances you roll a 1 (and subsequently score 4 points) on the new distribution? It is still a fair die.
- Do some values on the original die yield duplicate numbers of points when rolled? What does this do for the probability of scoring a particular y value?
Hope this helps :)
RuiAce:
--- Quote from: ethan.lozevski on June 03, 2021, 03:53:50 pm ---Hey guys,
I have attached a question that has confused me a little. I used Ali's model and put all my solutions over 19, to sum up to 1 as a pdf requires. Please let me know if I am doing this question correctly. Thanks, guys.
--- End quote ---
Building onto fun_jirachi's answer here. I would strongly advise considering the second point that he mentioned.
Your table of values is good up until the second row. Then I believe you are confusing yourself with the third row. You want to find the probability distribution for \(Y\). Just using the actual values that \(Y\) takes on, is not the correct approach here.
Hint: Firstly, what are the values that \(Y\) can actually be? (Refer to the second row of your table of values. There are 3 distinct values that \(Y\) can take on.) Secondly, for each of those three values of \(y\), what is \(P(Y=y)\)?
ethan.lozevski:
Thank you for your help. I think I may have read the question incorrectly. Is the following attached image correct?
Thank you.
fun_jirachi:
You've addressed my first question - well done!
The second question still stands however.
--- Quote from: RuiAce on June 03, 2021, 09:47:11 pm ---Hint: Firstly, what are the values that \(Y\) can actually be? (Refer to the second row of your table of values. There are 3 distinct values that \(Y\) can take on.) Secondly, for each of those three values of \(y\), what is \(P(Y=y)\)?
--- End quote ---
Should such a distribution have duplicate values for \(Y\)? If so, how would we amend our probability \(P(Y = y)\)? Definitely getting closer though, give it another shot :)
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