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Dmitrij [34]
3 years ago
9

I will fail if i dont pass this test plzz help!​

Mathematics
1 answer:
Fiesta28 [93]3 years ago
8 0

Answer:

12

Step-by-step explanation:

{2}^{2}  + 2(2) + 4 = 12

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What is the common ratio of the geometric sequence below? 10, 15, 22.5, 33.75
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That ratio will be 15/10 = 1.5.

Check:
.. 22.5/15 = 1.5
.. 33.75/22.5 = 1.5
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Find the mode of the following data set: 1, 2, 1, 2, 1, 2, 1, 2
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It is both 1 and 2. Both repeat the same amount of times
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The number of bank robberies that occur in Lagos is modeled to be Poisson distributed with mean of 1.8 per day. Find the probabi
cupoosta [38]

The Poisson distribution is a discrete distribution that calculates the likelihood that a certain number of events will occur within a certain amount of time.

The probability of getting exactly three robberies in a day is 0.1607.

<h3>What is meant by poison distribution?</h3>

The Poisson distribution is a discrete probability distribution used in probability theory and statistics to express the likelihood that a given number of events will occur within a specified time or space interval if they occur at a known constant mean rate and regardless of the interval since the last event.

The Poisson distribution is a discrete distribution that calculates the likelihood that a certain number of events will occur within a certain amount of time.

In the poison distribution a discrete random variable X has the following probability mass function,

$P(X=x)=\frac{e^{-\lambda} \cdot \lambda^x}{x !}$, where $\lambda$ is the mean of the distribution and $x=0,1,2,3 \ldots \ldots$

Given that $\lambda=1.8$

The required probability, $P(X=3)=\frac{e^{-1.8} .(1.8)^3}{3 !}=0.1607$

Therefore, the probability of getting exactly three robberies in a day is = 0.1607.

To learn more about poison distribution refer to:

brainly.com/question/9123296

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6 0
1 year ago
Rewrite the the expression using as few terms as possible. X^2+5x+4x+20
Effectus [21]

Answer:

x^2 + 9x + 20

Step-by-step explanation:

x^2 + 5x + 4x + 20

x^2 + 9x + 20

all u have to do is combine liked terms

8 0
3 years ago
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