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Latest revision as of 13:31, 28 November 2024
A bank accepts rolls of pennies and gives 50 cents credit to a customer without counting the contents. Assume that a roll contains 49 pennies 30 percent of the time, 50 pennies 60 percent of the time, and 51 pennies 10 percent of the time. How many rolls does the bank need to collect to have a 99 percent chance of a net loss?
- 20
- 24
- 35
- 45
- 49
References
Doyle, Peter G. (2006). "Grinstead and Snell's Introduction to Probability" (PDF). Retrieved June 6, 2024.