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2 years ago

What is the value of 7 in: a. 3.7 b. 12.07 c. 200.711

Mathematics

1 answer:

masya89 [10]2 years ago

6 0

A. seven tents b. seven hundredths c. seven tents

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g If the economy improves, a certain stock stock will have a return of 23.4 percent. If the economy declines, the stock will hav

dusya [7]

Answer:

$E(X) = 23.4* 0.67 -11.9*0.33= 11.759 \%$

Now we can find the second central moment with this formula:

$E(X^2) = \sum_{i=1}^n X^2_i P(X_i)$

And replacing we got:

$E(X^2) = (23.4)^2* 0.67 +(-11.9)^2*0.33= 413.5965$

And the variance is given by:

$Var(X) = E(X^2) - [E(X)]^2$

And replacing we got:

$Var(X) = 413.5965 -(11.759)^2 =275.5105$

And finally the deviation would be:

$Sd(X) = \sqrt{275.5105}= 16.599 \%$

Step-by-step explanation:

We can define the random variable of interest X as the return from a stock and we know the following conditions:

$X_1 = 23.4 , P(X_1) =0.67$ represent the result if the economy improves

$X_2 = -11.9 , P(X_1) =0.33$ represent the result if we have a recession

We want to find the standard deviation for the returns on the stock. We need to begin finding the mean with this formula:

$E(X) = \sum_{i=1}^n X_i P(X_i)$

And replacing the data given we got:

$E(X) = 23.4* 0.67 -11.9*0.33= 11.759 \%$

Now we can find the second central moment with this formula:

$E(X^2) = \sum_{i=1}^n X^2_i P(X_i)$

And replacing we got:

$E(X^2) = (23.4)^2* 0.67 +(-11.9)^2*0.33= 413.5965$

And the variance is given by:

$Var(X) = E(X^2) - [E(X)]^2$

And replacing we got:

$Var(X) = 413.5965 -(11.759)^2 =275.5105$

And finally the deviation would be:

$Sd(X) = \sqrt{275.5105}= 16.599 \%$

7 0

2 years ago

Help plzzzzzzz i really need it

Oliga [24]

Answer:

2n+2*3-6n

(-2*-3)+4n-(4n*2)

3 0

2 years ago

Kyle has 4 packs of baseball cards. Each pack

Llana [10]

So first 4x12 then divide that by 7

6 0

2 years ago

8=Z/16<br><br><br> Hint: equation and rational coefficient

sergiy2304 [10]

Answer:

z=128

Step-by-step explanation:

z/16=8

z=8*16

z=128

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3 years ago

A serving of a certain cereal has 8 grams of sugar in 1 portion. Which equation shows how the amount of sugar and the number of

elena-14-01-66 [18.8K]

I love this kind of problems
it would be p=1 and s=8
it helps to keep on going like a chart
ex: 1/8 2/16 3/24 etc

your gamer unstopableboy21

5 0

3 years ago