At the Grand Teton National Park, a ranger watches for moose evey moming in August. The number of moose has a Poisson distribution with a mean of 1.4. Find the probability that on a randomly selected moming, the number of moose seen is 5. 기15) -

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Chapter10: Statistics
Section10.6: Summarizing Categorical Data
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**Problem: Poisson Distribution at Grand Teton National Park**

At the Grand Teton National Park, a ranger watches for moose every morning in August. The number of moose has a Poisson distribution with a mean of 1.4. Find the probability that on a randomly selected morning, the number of moose seen is 5.

**Calculate:**

P(5) = [Input box]

**Explanation:**

In this scenario, we are dealing with a Poisson distribution, which is often used to model the number of events happening within a fixed interval of time or space. The key parameter of a Poisson distribution is the average rate (mean) λ (lambda), which in this case is 1.4.

The formula for calculating the probability of observing k events (in this case, 5 moose) in a Poisson distribution is:

\[ P(k) = \frac{e^{-\lambda} \cdot \lambda^k}{k!} \]

Where:
- \( e \) is the base of natural logarithms (approximately equal to 2.71828),
- \( \lambda \) is the mean number of occurrences (1.4 here),
- \( k \) is the actual number of occurrences (5 moose here),
- \( ! \) denotes factorial, the product of all positive integers up to that number.
Transcribed Image Text:**Problem: Poisson Distribution at Grand Teton National Park** At the Grand Teton National Park, a ranger watches for moose every morning in August. The number of moose has a Poisson distribution with a mean of 1.4. Find the probability that on a randomly selected morning, the number of moose seen is 5. **Calculate:** P(5) = [Input box] **Explanation:** In this scenario, we are dealing with a Poisson distribution, which is often used to model the number of events happening within a fixed interval of time or space. The key parameter of a Poisson distribution is the average rate (mean) λ (lambda), which in this case is 1.4. The formula for calculating the probability of observing k events (in this case, 5 moose) in a Poisson distribution is: \[ P(k) = \frac{e^{-\lambda} \cdot \lambda^k}{k!} \] Where: - \( e \) is the base of natural logarithms (approximately equal to 2.71828), - \( \lambda \) is the mean number of occurrences (1.4 here), - \( k \) is the actual number of occurrences (5 moose here), - \( ! \) denotes factorial, the product of all positive integers up to that number.
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