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Latest revision as of 15:41, 27 June 2024
A balanced coin is flipped 400 times. Determine the number [math]x[/math] such that the probability that the number of heads is between [math]200- x[/math] and [math]200 + x[/math] is approximately .80.
- 7
- 9
- 11
- 13
- 15
References
Doyle, Peter G. (2006). "Grinstead and Snell's Introduction to Probability" (PDF). Retrieved June 6, 2024.