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Lilit [14]
3 years ago
6

32 people volunteers to donate blood. n dident have he health requirment so they couldent donate the rest of the volunteers dona

ted 470 milimeters each
Mathematics
1 answer:
Vesna [10]3 years ago
4 0

Answer:

the equation representing total amount of blood donated is 470(32-n)=15040-470n \ ml.

Step-by-step explanation:

Total number of volunteers = 32

number of volunteers couldn't donate blood = n.

So Number of volunteers who donated blood can be calculated by subtracting number of volunteers couldn't donate blood from Total number of volunteers.

Framing in equation form we get;

So, the number of remaining volunteers who donated blood = 32-n.

Each of these volunteers donated blood = 470 ml

Now Total Amount of Blood donated is equal to Amount each of these volunteers donated blood times the number of volunteers who donated blood.

Framing in the equation form we get;

total amount of blood donated  milliliters = 470(32-n)=15040-470n \ ml

Hence the equation representing total amount of blood donated is 470(32-n)=15040-470n \ ml.

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A couple plans to have children until they get a​ girl, but they agree they will not have more than three​ children, even if all
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Answer:

a)Let X be number of children

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Step-by-step explanation:

The complete question is:

A couple plans to have children until they get a​ girl, but they agree they will not have more than three​ children, even if all are boys. Assume that the probability of having a girl is 47.00​%. ​

a) Create a probability model for the number of children​ they'll have.

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​(Round to four decimal places as​ needed

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Solution:

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a) P(X=1)= 0.47

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P(X=3)= 0.47× 0.53× 0.53 + 0.53× 0.53× 0.53

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b) E(number of children)= 1× P(X=1) + 2 ×P(X=2) + 3 × (PX=3)

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c) Y: number of boys

P(Y=1)= 0.53×0.47= 0.2491

P(Y=2) = 0.53×0.53×0.47=0.46375

P(Y=3)= 0.53× 0.53× 0.53= 0.148875

E(Y)= P(Y=1)×1 + P(Y=2)×2 + P(Y=3)×3

       = 0.148875×3 +0.46375×2+0.2491 ×1

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