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Wikipedia.com has some very good statistics info also.

Well, you know that 5 deciles lie below the mean, so all you need to solve for is the 1 decile (10%) above. If z=(X-mean)/Standard deviation then, z = (X - 200)/50 and the z value for the additional...

Assuming that the cards are replaced after each draw, the second draw would have a 1 in 52 chance of being the same card as the first draw. The third draw would have a 2 in 52 chance of being the...

I have a frigidaire dryer model number FGR231AS2 that runs but no heat. The first symptom was that it ran all night 1 night. Since then I have lost heat except for 1 time when I changed the setting...