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# The average number of babies born at a hospital is 6 per hour. What is the probability that three babies are born during a particular 1 hour period?

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## Answer to a math question The average number of babies born at a hospital is 6 per hour. What is the probability that three babies are born during a particular 1 hour period?

Jon
4.6
To solve this problem, we can use the Poisson distribution. The Poisson distribution is commonly used when we want to calculate the probability of a certain number of events occurring within a specific time period, given the average rate of occurrence.

The Poisson distribution is defined as:

P$X = k$ = \frac{\lambda^k \cdot e^{-\lambda}}{k!}

where:
- P$X = k$ is the probability of k events occurring
- \lambda is the average rate of events occurring in the given time period
- e is the base of the natural logarithm
- k! is the factorial of k, which represents the number of ways to arrange k events

In this problem, the average rate of babies born per hour is 6 $\lambda = 6$ and we want to find the probability of three babies being born in a particular 1-hour period $k = 3$.

Using the Poisson distribution formula, we can calculate the probability:

P$X = 3$ = \frac{6^3 \cdot e^{-6}}{3!}

Simplifying further:

P$X = 3$ = \frac{216 \cdot e^{-6}}{6}

Calculating the value of e^{-6} :

e^{-6} \approx 0.00248

Substituting this value into the probability formula:

P$X = 3$ = \frac{216 \cdot 0.00248}{6}

Simplifying further:

P$X = 3$ \approx 0.089

Therefore, the probability that three babies are born during a particular 1-hour period is approximately 0.089.

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