Binomial Distribution with non integer succes

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SUMMARY

The discussion focuses on calculating probabilities using the binomial distribution when the mean (μ) and standard deviation (δ) yield non-integer values. Specifically, the example provided illustrates that with μ - 2δ equal to 12.3 and μ + 2δ equal to 17.8, the relevant integer values for the number of students wanting a new book are 13, 14, 15, 16, and 17. The question raised is whether to round non-integer results when determining factorials for probability calculations. The consensus is that rounding is not necessary, as the relevant integer range can be directly used.

PREREQUISITES
  • Understanding of binomial distribution concepts
  • Familiarity with mean (μ) and standard deviation (δ) calculations
  • Knowledge of factorial functions in probability
  • Basic statistical analysis skills
NEXT STEPS
  • Study the properties of the binomial distribution in detail
  • Learn about calculating probabilities using non-integer values
  • Explore the implications of rounding in statistical calculations
  • Investigate the use of statistical software for probability analysis
USEFUL FOR

Students, statisticians, and educators involved in probability theory and statistical analysis, particularly those dealing with binomial distributions and non-integer outcomes.

chargeddyslex
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I am doing a problem where I am to determine the probability that the number of students wanting a new book is within two standard deviations of the mean. μ +- 2δ comes out with a non integer number, in which I have to use to find probability. The equation to find probability uses the factorial of this number. Do I round this number to determine the factorial?
 
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well if [itex]\mu - 2 \delta[/itex] is 12.3 and [itex]\mu + 2 \delta[/itex] is 17.8 then the number of students wanting the book is within two standard deviations of the mean when the number of students wanting the book is 13, 14, 15, 16, or 17. You can extrapolate.
 

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