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stiv31 [10]
4 years ago
8

Solve for k and show step by step how you did it. 3-3k+7k=5b

Mathematics
1 answer:
Gnesinka [82]4 years ago
6 0

Answer:

k=  5b-3/

        4

Step-by-step explanation:

3−3k+7k=5b

(Combine −3k and 7k to get 4k.)

3+4k=5b

(Subtract 3 from both sides)

4k=5b−3

(Divide both sides by 4.)

k= 5b-3/

        4

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Answer:

P(X\geq 5)=1-P(X

Using the pmf we can find the individual probabilities like this:

P(X=0)=\frac{e^{-6.4} 6.4^0}{0!}=0.001662

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Previous concepts

Let X the random variable that represent the number of people that will become sereiosly ill in two years. We know that X \sim Poisson(\lambda)

The probability mass function for the random variable is given by:

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On this case we are interested on the probability of having at least two chocolate chips, and using the complement rule we have this:

P(X\geq 5)=1-P(X

Using the pmf we can find the individual probabilities like this:

P(X=0)=\frac{e^{-6.4} 6.4^0}{0!}=0.001662

P(X=1)=\frac{e^{-6.4} 6.4^1}{1!}=0.010634

P(X=2)=\frac{e^{-6.4} 6.4^2}{2!}=0.034029

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P(X=4)=\frac{e^{-6.4} 6.4^4}{4!}=0.116151

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P(X \geq 5) =0.76493

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