An analyst has developed the following probability distribution for the rate of return for a common stock.
Scenario Probability Rate of Return
10 0.34 -19%
20 0.48 8%
30 0.18 26%
a. Calculate the expected rate of return. Round your answer to 2 decimal places.
b. Calculate the variance and the standard deviation of this probability distribution. Use the percentage values for your calculations (for example 10% not 0.10). Round intermediate calculations to 4 decimal places.
Answers
Answer:
a) 2.06
b) variance = 270.90 , std = 275.14
Step-by-step explanation:
a) Determine Expected rate of return
attached below is the calculated table for the solution provided
∴ Expected rate of return = ∑ Xp(x) = -6.46 + 3.84 + 4.68 = 2.06
b) Determine the variance and standard deviation
Variance ( Vx ) = E(x)^2 - [ Expected rate of return ]^2
= 275.14 - ( 2.06 )^2 ≈ 270.90
standard deviation = √ variance = √270.90 = 16.459
note : E(x)^2 = ∑ x^2 p(x) = 275.14
Related Questions
Name the triangle described
Answers
Answer:
acute angle
Step-by-step explanation:
different angles will produce different "opposite side" lenghts, so the angle has 3 distinct angles and therefore 3 distinct sides, different sides means is an Scalene.
Now, one of the angles is 90° or namely a right-angle, that makes it a Right Scalene Triangle.
Help fast !!! I have like 5 minutes left
Answers
Answer:
y-intercept = (0,3)
Step-by-step explanation:
Please help!!!!
check for understanding:
Answers
Answer:i thinks is 115.9 maybe im not sure because its in my HW
Step-by-step explanation:
Answer:
x=7.245
Step-by-step explanation:
pythagoras theorem says:
c=√a^2+b^2
so:
c=a2+b2=3.22+6.52≈7.245
HELP!!!! If you help me with this you’ll be my favorite person ever
Answers
Compute the area of a circle with a diameter of 18 inches.
Answers
Answer:
254.34
Step-by-step explanation:
Diameter: 2×radius
Radius:Diameter÷2
Area: pi×radius²
18/2=9
Radius=9
pi=3.14
3.14×9²=254.34
The area is 254.34
Which of the following rules represents the function shown in the table?
f(x)=n+3
f(x)=3n
f(x)=1/3n
Answers
Answer:
f(x)=3n
Step-by-step explanation:
We can see it goes x=2 to y=6 this has been times by 3, x=-1 to y=-3 also times by 3 and x=0 y=0 0x3=0
7. at + b = ar – c
Solve for a
Answers
okkkkkkkkkkkkkkkkkkkkkkkkkkk
Need help a lot stuck
Answers
The answer is A
ok done. Thank to me :>
8. There are 18 trumpets in a music room. These trumpets will be placed in 3 equal rows. Which number sentence can be used to find the number of trumpets in each row?
Answers
Answer:
18÷3=6
Step-by-step explanation:
18 trumpets have to be DIVIDED into 3 rows so you would divide 18 by three to get 6 trumpets in each row.
Look at the graph below. What is the x-intercept?
Answers
Answer:
-3
Step-by-step explanation:
Whatever number the line passes on the x-intercept is the answer:)
as an estimation we are told 5 miles is 8km convert 60km to miles
Answers
Answer:
60km is 37 Miles
it is a decimal- 37.2 Miles
Step-by-step explanation:
divide 60 by 1.609
Answer: using this we can say that 60km is 37.5 miles
Step-by-step explanation:
first you divide 60 and 8 which gives us 7.5
using this we multiply 7.5*5=37.5
Lindsay wrote checks from her checking account for $20 and $35. Finally, she deposited $63 into her account. Which number describes the change in the balance of her account?
Answers
Answer:
20 and 35 because it says that she wrote a check.
Step-by-step explanation:
please help me out y'all
Answers
first graph= negative association
second graph = no association
third graph = positive association
Which of the following numbers is proportional to 84/108?
1. 86/110
2.98/126
3.64/72
4.91/104
Answers
Proportional numbers are numbers with the same equivalent ratio
98/126 is proportional to 84/108
The number is given as:
[tex]Number = \frac{84}{108}[/tex]
Reduce fraction to the lowest term
[tex]Number = \frac{7}{9}[/tex]
Reduce 86/110 to the lowest term
[tex]Number = \frac{86}{110}[/tex]
Divide by 2/2
[tex]Number = \frac{43}{55}[/tex]
43/55 is not equivalent to 7/9
Reduce 98/126 to the lowest term
[tex]Number = \frac{98}{126}[/tex]
Divide by 14/14
[tex]Number = \frac{7}{9}[/tex]
7/9 is equivalent to 7/9.
Hence, 98/126 is proportional to 84/108
Read more about proportional numbers at:
https://brainly.com/question/1781657
Which expression has a coefficient of 4?
A
(2^x)+4
B
4(2^x)+1
C
2(x^4)+1
D
2(4^x)+1
Answers
Answer:
Option D
Step-by-step explanation:
[tex]\\ \sf\longmapsto 2(4^x)[/tex]
You have to first find 4^x and then multiply it with two .Not like this
[tex]\\ \sf\longmapsto 2(4^x)=8^x [/tex](×)
Hence the variable has coefficient 4 as 4^x is multiplied.
Not sure how this works as a fraction to place the dot in the right place
Answers
Answer:
You would place 7/6 one tick to the right of 1, and -2 5/6 one tick to the right of -3
Step-by-step explanation:
Plz help me NOW I will mark u brainliest
Answers
[tex]m\% \: \: of \: \: p\% \: \: of \: \: n \\ = \frac{m}{100} \times \frac{p}{100} \times n \\ = \frac{m \times p \times n}{100 \times 100} \\ = \frac{mnp}{10000} [/tex]
Hope you could get an idea from here.
Doubt clarification - use comment section.
The absolute value of | – 71 – 19 – 18% is -16.
TRUE
FALSE
Answers
Answer: False i think
Step-by-step explanation:
11,16,21,...
Find the 43rd term.
Find the 43rd term.
Answers
Answer:
You add 5 each time so we just need to multiple 5 by 40 since we alredy have the first three terms.
40*5=200
21+200=221
Hope This Helps!!!
If .60 = N could you write the expression .60N
Answers
Answer:
N+60
Step-by-step explanation:
(giving brainlelist if answered correctly!) which of the following inequalities is -4
?
Answers
Answer
A, B, E.
Hope you could get an idea from here.
Doubt clarification - use comment section.
consider equation of circle x2-2x+y2-4y-4=0,if line 2x-y+a=0 is its diameter then find value of a
Answers
Answer:
Step-by-step explanation:
x² - 2x + y² - 4y - 4 = 0
x² - 2x + y² - 4y = 4
complete the squares
(x² - 2x + x₀) + (y² - 4y + y₀) = 4
the unknown number will be the square of half of the x¹ coefficient
(x² - 2x + 1) + (y² - 4y + 4) = 4 + 1 + 4
(x - 1)² + (y - 2)² = 9
This tells us that the circle is centered on (1, 2)
Which is also a point on the diameter
2x - y + a = 0
a = y - 2x
a = 2 - 2(1)
a = 0
7x+27x+2 from -5x^2-2x
ADDING AND SUBTRACTING POLYNOMIALS
Answers
Answer:
7x+27x=34x
34x+2-(-5×^2)-2x
34x+2+5x^2-2x
34x+2x=36x
36x+2+5x^2
write an inequality with a solution that matches the graph at least two steps should be needed to solve your inequality. Just 62 and 64 please
Answers
Answer:
x >= -2
-2 < x < 1
Chris wants to order DVDS over the internet. Each DVD costs $12.99 and shipping order costs $9.99. If he can spend no more than $100 how many DVDs can he buy?
Answers
Answer:
4
Step-by-step explanation:
I think its 4 because the max DVD's he could have bought if shipping was free was 7 but since shipping is not free,he has to equal the amount so 12.99+9.99= 22.98 and the maximum multiplication by 22.98 with the maximum number as 100 would be 91.92, thats my answer
The weights of adult polar bears, the largest bear species in North America, have a mean of 950 pounds and standard
deviation of 84 pounds. What is the weight of a polar bear that has a z-score for weight of -1.50?
Find the Z-table here.
O 126 pounds
O 824 pounds
948.5 pounds
O 951.5 pounds
O 1,076 pounds
Answers
The weight of 824 pounds of a polar bear has a z-score of -1.50.
The z score is used to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:
[tex]z=\frac{x-\mu}{\sigma} \\\\where\ x=raw\ score,\mu=mean,\sigma=standard\ deviation[/tex]
Given that μ = 950, σ = 84
For z = -1.50:
[tex]-1.50=\frac{x-950}{84}\\\\x-950=-126\\\\x=824[/tex]
The weight of 824 pounds of a polar bear has a z-score of -1.50.
Find out more on z score at: https://brainly.com/question/25638875
simplify.
|−6 + (−3)| (−3) + 8 ÷ 2
Answers
6
3
8
6
3
8
to an improper fraction.
Tap for more steps...
51
8
−
2
1
4
51
8
-
2
1
4
Convert
2
1
4
2
1
4
to an improper fraction.
Tap for more steps...
51
8
−
9
4
51
8
-
9
4
To write
−
9
4
-
9
4
as a fraction with a common denominator, multiply by
2
2
2
2
.
51
8
−
9
4
⋅
2
2
51
8
-
9
4
⋅
2
2
Write each expression with a common denominator of
8
8
, by multiplying each by an appropriate factor of
1
1
.
Tap for more steps...
51
8
−
9
⋅
2
8
51
8
-
9
⋅
2
8
Combine the numerators over the common denominator.
51
−
9
⋅
2
8
51
-
9
⋅
2
8
Simplify the numerator.
Tap for more steps...
33
8
33
8
The result can be shown in multiple forms.
Exact Form:
33
8
33
8
Decimal Form:
4.125
4.125
Mixed Number Form:
4
1
8
If the expression inside the absolute value bars which is -6 .Simplifying the expression |−6 + (−3)| (−3) + 8 ÷ 2 is: 9.
What is the expression?Let simplify the given expression step by step:
|-6 + (-3)| = |-9| = 9
First calculate the expression inside the absolute value bars which is -6 + (-3) = -9. Then take the absolute value of -9, which is 9.
(-3) + 8 ÷ 2 = (-3) + 4 = 1
We follow the order of operations (PEMDAS/BODMAS).
First perform the division:
8 ÷ 2 = 4
Add -3 to 4 which gives us 1.
Simplified expression :
9 * 1 = 9
Therefore the expression is 9.
Learn more about expression here:https://brainly.com/question/1859113
#SPJ3
Which of the following rational functions is graphed below?
Answers
Answer:
Option C
Step-by-step explanation:
According to the graph, there are vertical asymptotes at [tex]x=-3[/tex] and [tex]x=7[/tex]. Therefore, C is correct because -3+3=0 and 7-7=0.
Describe the location from the origin of each point in problem 5
Answers
Solve. x 2 = 7
pls help!!
Answers
Answer:
x = 14
Step-by-step explanation:
1) Multiply both sides by 2.
x = 7 * 2
2) Simplify 7 * 2 to 14.
x = 14
Answer:
D.
Step-by-step explanation:
when using diversions in fractions to whole numbers you will always multiply the denominator by the whole number. So 2 x 7 equals 14. :))
