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May 20, 2016 13:19
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Brain teaser - using the Central Limit Theorem.
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| m <- 400 * 0.5 #mean | |
| v <- 400 * 0.25 #variance | |
| s <- sqrt(v) #stdev | |
| p <- 1 - pnorm(219, m, s) | |
| print(round(p, digits=2)) |
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