Gareth believes that if he flips a coin 820 times, it will land heads up exactly 410 times. what would you tell gareth about his prediction?

Although the probability of flipping heads on a coin is ½ when taking a large sample it is not likely that the results will end up being exactly ½ of the sample. One thing Gareth can do is predict that it will be close to 410.

Hope this helps, and May the Force Be With You!

-Jabba