Statistics Help Requested (Discrete Distributions)

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SUMMARY

The discussion centers on calculating the probability of accommodating all passengers on an overbooked flight with 100 tickets sold for a plane with 95 seats, given a 5% no-show rate. The user attempts to apply the binomial distribution formula, specifically using the equation P(X ≤ 95) = Σ (100 choose x) * (0.95)^x * (0.05)^(100-x) for x from 0 to 95. The user seeks clarification on calculating the probabilities for specific scenarios where 0 to 4 passengers do not show up. The correct approach involves using the binomial distribution to find the cumulative probability of 95 or fewer passengers showing up.

PREREQUISITES
  • Understanding of binomial distribution and its properties
  • Familiarity with probability theory and calculations
  • Knowledge of combinatorial mathematics (n choose k)
  • Basic statistical software or tools for calculations (e.g., R, Python)
NEXT STEPS
  • Learn how to implement binomial distribution calculations in Python using SciPy
  • Explore cumulative distribution functions (CDF) for binomial distributions
  • Study Poisson approximation for binomial distributions in large sample sizes
  • Investigate real-world applications of overbooking strategies in the airline industry
USEFUL FOR

Students studying statistics, airline operations analysts, and anyone interested in probability calculations related to overbooking scenarios.

nichojo
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Homework Statement



The problem:

An airline always overbooks, if possible. A particular plane has 95 seats on a flight and the airline sells 100 tickets.

If the probability of an individual not showing is 0.05, assuming independence, what is the probability that the airline can accommodate all the passengers who show up?

Homework Equations



Binomial and Poisson

The Attempt at a Solution



I tried taking the sum from 1 to 95 (X<=95) with a choose of (100, x) * (.95)^x * (.05)^(100-x)

with no luck. I've also tried numerous other sequences, but I feel I'm stuck.

Thanks in advance.
 
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What is the probability that 4 don't show up? 3? 2? 1? 0? Add them up.
 

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