- Jul 17, 2007
- Uni Grad
Share your multiple choice responses here.
Can't remember exactly all mine (forgot to circle) but the ones i recognised i put different are in bold... i could be wrong so don't panic too much haha1. D
11. C A
14. D B
20. D B
21. A C
It was similar to a lot of the probablity questions I practised.Seems like a lot of people are putting A instead of D for question 16. I went D, as having an 8/31 chance of rain on the first day, and it raining doesn't diminish the opportunity for there to still be an 8/31 chance of rain the second day, as there is an 8/31 AVERAGE, not 8 days in that particular month raining. Thoughts?
The question said 'consecutive days' however.I just heard from someone else in my class that our teacher, who is also the Head Teacher of maths at our school said it was 8/31 x 8/31. I think it's 8/31 x 8/31, because I take it as the probability of it raining on any given day in October is 8/31, with the second day additioanlly having an 8/31 chance of rain. From what I see, the problem with your reasoning is that you're assuming that there has to be a total of 8 rainy days in October, when the question is simply giving an average number of days in October it rains, and therefore the probability of it raining on one particular day, which is 8/31, no matter what day it is, and what previously occured in that month. I hope I'm making sense here