All categories

2 years ago

I need hep plz quick

Mathematics

2 answers:

Harman [31]2 years ago

7 0

.15 repeating which is the 2nd one

HACTEHA [7]2 years ago

4 0

It is 0.15 with the line over the top of to show it continues!

You might be interested in

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

Find the probability. One digit from the number 3,151,221 is written on each of seven cards. What is the probability of drawing

Verizon [17]

Answer:

5/7

Step-by-step explanation:

7 0

2 years ago

Whats from 98 to 67.7

spin [16.1K]

This is a 30.91837% decrease, so approximately a 31% decrease from 98 to 67.7.

3 0

3 years ago

Select all numbers that are in the domain.

NISA [10]

There is no picture or any information given to help you

6 0

2 years ago

I don't know how to solve

mart [117]

Bcoz a stright angle is 180 degrees, and l and k r parallel lines, so it means ...

6 0

2 years ago