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3 years ago

What is 0.23 rounded to the nearest hundredth

Mathematics

1 answer:

sergiy2304 [10]3 years ago

5 0

0.2. <<<<<<<<<<<<<<<<<<<<<<<<<<

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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

What is the vertex of the graph of the function f(x) = x2 − 4x?

Vsevolod [243]

Answer:

(2, -4).

Step-by-step explanation:

x^2 - 4x

= (x - 2)^2 - 4.

So the vertex is at

(2, -4).

6 0

2 years ago

Read 2 more answers

Write 1,334,457. in 12 expanded form

Alchen [17]

1,000,000+3000,000+30,000+4,000+400+50+7

8 0

3 years ago

This time you are going to enter you answer differently. Recall the factors of 12 are 1, 2, 3, 4, 6, 12. You will enter this as

mafiozo [28]

Answer:

2,3,6

Step-by-step explanation:

those are the only positive factors in there

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2 years ago

F(x)=-x^2-10x-2 <br> given the polynomial function is F(-9)

SpyIntel [72]

Answer:

169

Step-by-step explanation:

dont trip

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3 years ago