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otez555 [7]
3 years ago
15

Assume that the Poisson distribution applies to the number of births at a particular hospital during a randomly selected day. As

sume that the mean number of births per day at this hospital is 13.4224. Find the probability that in a day, there will be at least 1 birth.
Mathematics
1 answer:
kakasveta [241]3 years ago
7 0

Answer:

0.9999985  = 99.99985% probability that in a day, there will be at least 1 birth.

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given interval.

Assume that the mean number of births per day at this hospital is 13.4224.

This means that \mu = 13.4224

Find the probability that in a day, there will be at least 1 birth.

This is:

P(X \geq 1) = 1 - P(X = 0)

In which

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

P(X = 0) = \frac{e^{-13.4224}*13.4224^{0}}{(0)!} = 0.0000015

Then

P(X \geq 1) = 1 - P(X = 0) = 1 - 0.0000015 = 0.9999985


0.9999985  = 99.99985% probability that in a day, there will be at least 1 birth.

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