९ सप्टेंबर, २००६

The odds were 1 in 3,669,120,000,000.

Woman wins $1 million in a scratch card lottery, after previously winning $1 million on another scratch card. She works in a deli making sandwiches, and even after this new win, she's going to keep making the sandwiches. Will she keep buying scratch cards?

८ टिप्पण्या:

The Drill SGT म्हणाले...

I think those odds are overstated.

I would think that odds shown of:

Lottery officials say that in 2002 Ms Wilson beat odds of 1 in 5.2 million when she won the Cool Million scratch card game

and

Then last month she beat odds of 1 in 705,600 by winning New York lottery's Jubilee scratch card game.


mean that those are the odds given 1 draw of a win in each of the contests.

so the odds given of 3.6x10**12 are the odds 4 years ago of winning one draw of the first lottery and then today winning another single draw of the second lottery.

that is a 2 event joint probability

given that she bet more than once on the first and second lottery he odds went down a lot and of course,

once she had won the first lottery, then the odds of winning the second (depending on how many times she bought a ticket) were much less than 1 in 705,000

but it sounds good

Beau म्हणाले...

How could you not?

Amazing odds...how much is three and a 12 zeros anyway. Three cajillion?

jimbino म्हणाले...

The odds that an arbitrary .
person who was foolish enough to participate in both lotteries would win both might well be the stated 1 in 3 trillion, but the odds that the winner in the first lottery would win the second were merely the 1 in 800,000 or so that it took to win the second lottery.

The odds that someone who won some earlier lottery wins some second lottery is even more favorable than 1 in 800,000.

Folks in general, and math-challenged lawyers and judges, in particular, are notoriously incapable of handling simple probability.

Y'all need a refresher course in Paulos' book Innumeracy.

dearieme म्हणाले...

The question is whether one can jog along on a couple of million.

JohnF म्हणाले...

drill sgt has it almost right. If the odds given on each lottery are correct (1 in 5.6 million and 1 in 705,600), then, before any tickets are bought, and assuming she will buy one of each, the odds of winning both are indeed 3.6 (actually, 3.7) in 10 trillion.

However, after the first lottery, her chances of winning the second are the same as everyone else's, i.e., 1 in 705,600. The fact that she won the first lottery is no more relevant than the fact that, say, lightning hit a tree outside her house prior to the second lottery.

RHodnett म्हणाले...

Do you realize how many scratch cards she'll be able to buy with a million dollars?

JohnF म्हणाले...

When I said 3.7 in 10 trillion, I should have said 1 in 3.7 trillion, as in the title of Ann's post. Sorry for the error.

Ann Althouse म्हणाले...

On the math point, I think clearly the perspective taken is before she's bought any tickets, but the key missing consideration is that she didn't just buy two tickets. She's probably bought hundreds or thousands of tickets.

Plus she's lucky!