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real life math PROBABILITY question!?!?
There is a week and 4 day online contest to win two tickets to a hot concert that consists of people making an account on the website then entering it daily
they give you a choice of entering it up to 10 times within every 24hrs
but every 1 time you enter is worth 100 pts
(and the way you receive pts is by playing
trivia games and polls on the website
each game gives different pts from 100-2500 pts, by taking a guess, i assume not a lot of people have time to recieve those pts unless they really want those hot tickets.)
If the the owners of the website announced a total of 200 people have entered the contest once or more a day before the day of the contest's deadline and i have entered it 10 times a day for 8 days, what is the probability or chances ill win the contest?
1 Answer
- 7 years agoFavorite Answer
If I understand this properly, you know how many people have entered, but all you know is they have entered at least once. I do not think there is a way to determine the probability of winning from the information you have. You could bound it, in a sense, by saying "assume I have entered 10 times for 8 days and everyone else has only entered one time total." This is your best scenario. The other end of the scale is that all 200 people have entered as many times as you have. If all have entered same # of times as you (worst case), then you have a 1/200 (.5% or half of one percent) chance of winning. If you have 80 entries (10 times a day for 8 days) and everyone else has one, then there are 199 people with one entry and you with 80, so the total probability of you winning is 80/(199 + 80) = 28.7% . You will likely not know enough to change these estimates, so somewhere between 0.5% and 28% are your chances. If I have misunderstood how your entries add up, just recalculate the top value as
(your # of entries)/(199 + your # of entries)
Hopefully you get the idea....
Source(s): my brain
