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3 years ago

You want to invest in companies belonging to Gispa Group of

Mathematics

1 answer:

Leviafan [203]3 years ago

4 0

Answer:

1.2803

Step-by-step explanation:

According to the Question,

Given That, You want to invest in companies belonging to Gispa Group of 1 Companies, Inc. so you did some research and found out that companies belonging to this group have an average gain of 0.8 percent and a standard deviation of 0.7 percent.

And, a positive percent (gain) means profit and a negative percent means a loss. If you choose 20 companies.

Therefore, We have Average Gain(ц) = 0.8%

Standard deviation(σ) = 0.7%

Number of Companies(n) = 20

So, the probability that the companies are gaining more than 1 percent is

$X_{i}$ = (σ² × n) / ц ⇒ (0.7²×20) / (0.8*10) = 1.2803

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Answer:

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Step-by-step explanation:

Part 1

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using a graphing tool

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see the attached figure N 1

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$y=x+2$ -----> equation A

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see the attached figure N 2

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Ksivusya [100]

For this case we have the following system of equations:
5x + 3y = 17
-8x - 3y = 9
We can rewrite the system like:
Ax = b
Where,
A = [5 3; -8 -3]
b = [17; 9]
x = [x; y]
The determinant of matrix A is given by:
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lAl = -15 + 24
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Answer:
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