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Elena-2011 [213]
3 years ago
13

An employee was randomly chosen from a company.If the expected value of the age of the employee is ____ years old, the mean age

of all the employees in the company is _____ years old
Mathematics
1 answer:
zheka24 [161]3 years ago
4 0
What is the age fo the first employee?
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Novosadov [1.4K]
Answer: 74.8%

This answer is approximate.
The value is rounded to the nearest tenth of a percent.

==========================================

Explanation:

Let,
X = area of the larger circle
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The goal is to compute the ratio Z/X to get the answer we want

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A = pi*r^2
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Now repeat for the smaller circle
A = pi*r^2
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Subtract those results to find the value of Z
Z = X-Y
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This is the exact area of the red donut region

Divide Z over X to get the probability of landing in the red region
Z/X = (47.9997pi)/(64.1601pi)
Z/X = (47.9997)/(64.1601) <--- note how the pi terms cancel
Z/X = 0.74812 which is approximate

Convert to a percent
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0.74812 ---> 74.812%

Then round this to one decimal place
74.812% ---> 74.8%

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y=-1/3x+1/2

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