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Karo-lina-s [1.5K]
3 years ago
15

In the notation below, X is the random variable, c is a constant, and V refers to the variance.

Mathematics
1 answer:
Volgvan3 years ago
6 0

Answer:

-V(X + c) = V(X) + c

Step-by-step explanation:

Using the propierties of the variance:

  • <em>The variance of a constant is zero:</em>

<em></em>

<em>Var(k)=0</em>

<em></em>

Where k is an arbitrary constant. So:

-V(c) = 0 is true.

  • <em>If all values are scaled by a constant, the variance is scaled by the square of that constant: </em>

<em></em>

<em>Var(kX)=k^2V(X)</em>

<em></em>

Where k is an arbitrary constant. Therefore:

-V(cX) = c2 V(X) is true.

  • <em>Variance is invariant with respect to changes in a location parameter. That is, if a constant is added to all values of the variable, the variance is unchanged: </em>

<em></em>

<em>Var(X+k)=V(X)</em>

<em></em>

Where k is an arbitrary constant. Hence:

-V(X + c) = V(X) + c is not true.

<em></em>

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Even integers from 11 and 111​
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Answer:

Please see below :)

Step-by-step explanation:

Integers - Whole numbers (no fractions or decimals!)

11 to 111

12, 14, 16, 18, 20

22, 24, 26, 28, 30

32, 34, 36, 38, 40

42, 44, 46, 48, 50

52, 54, 56, 58, 60

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72, 74, 76, 78, 80

82, 84, 86, 88, 90

92, 94, 96, 98, 100

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Hope this helped!

6 0
3 years ago
One more then im done, ty ^^
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Answer:

5

Step-by-step explanation:

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2 years ago
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Answer:

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Step-by-step explanation:

In late 1977, Winston attended a FIDE-rated tournament at Hunter College High School in New York City. Despite being one of the highest-rated players in the tournament, Winston lost all nine of his games. A few months later, on January 26, 1978, following further surprising game losses, Peter Winston vanished and was never heard from again. According to some sources, Winston's disappearance occurred when he left his home without money, identification, or luggage during a severe winter storm. Many chess players who were close to or acquainted with Winston claim that the champion chess player's mental health had deteriorated, along with his game performance, in the last few years of his life, and that the decline in his mental health may have led to his disappearance.

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Line BD is tangent to circle O at C, Arch AEC = 299, and ACE = 93. Find Angle DCE.
VladimirAG [237]
In triangle ACE,
we know C=93,E can be calulated by using arch angle AEC...what ever that is....,using this we get  A=180-(E+93)

So, by alternate segment theorem, DCE= A.

thats all i can say.
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