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VashaNatasha [74]
3 years ago
9

Summer Storme is analyzing an investment. The expected one-year return on the investment is 20 percent. The probability distribu

tion of possible returns is approximately normal with a standard deviation of 15 percent. a. What are the chances that the investment will result in a negative return? b. What is the probability that the return will be greater than 10 percent? 20 percent? 30 percent? 40 percent? 50 percent?
Mathematics
2 answers:
TiliK225 [7]3 years ago
8 0
S s sbbdbdbdbdb dhsbdhdnr
Eva8 [605]3 years ago
3 0

Answer:

suchh harddb

Step-by-step explanation:

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Sylvia surveyed her classmates at school to find out who plays sports at her school.the table below shows the number of students
Neporo4naja [7]

Answer:

Using the info you just gave,

Basketball, 8 studentsfootball, 7 studentsSoccer 12 studentsother, 13 students

We can now figure out the percentage of students that did NOT select soccer.

First, you need to add all the students together.

8 + 7 + 12 + 13

You get 40 students all together.

Now, add together the students that DID NOT choose soccer.

7 + 8 + 13 = 29

That means that 28/40 of the students did not choose soccer.

Now, convert that to a percentage.

28/40 = 0.7

To make that into a percentage, multiply by 100

Thus, the percentage of students that did not select soccer is 70%.

Hope this helped!

7 0
2 years ago
Write an equation of a line in slope-intercept form given the slope (m) and the y-intercept (b).
m_a_m_a [10]

Step-by-step explanation:

y = mx + b

y = -7x + 7

this assumes m = - 7 , it got chopped off, otherwise what ever slope is change the first 7 for that number.

8 0
3 years ago
Please answer with steps
Natali [406]
1a. 21/3+32/5
((2*3)+1)/3+((3*5)+2)/5
7/3+17/5
(7*5+17*3)/15
86/15 1b. 2/3+3/5+2/5 (2*5+3*3+2*3)/15 (10+9+6)/15 25/15 5/3 2a. 57/10-22/5 (5*10+7)/10-(2*5+2)/5 57/10-12/5 (57*1-2*12)/10 33/10 2b. 5/12-1/4 (5*1-1*3)/12 2/12 1/6 3 say she has x stamps,she gave 2/9 and 1/5 to her frends so she is left with X-2x/9-x/5 (9*5x-5*2x-9*1x)/45 (45x-10x-9x)/45 26x/45 4. 7/10+1/5 (1*7+2*1)/10 9/10 5. Brick 21/3kg Stone (2*3+1)/3-(1*10+1)/10 7/3-11/10 (7*10-3*11)/30 (70-33)/30 37/30
7 0
3 years ago
What is pm ⋅ pn equal to?
zimovet [89]

Answer:

p^2 pm pn mn

Step-by-step explanation:

Using the FOIL Method we get this result

p * p

p * n

p * m

m * n

5 0
3 years ago
Read 2 more answers
Sketch the region enclosed by y=3x and y=x^2 . Then find the area of the region.
kolezko [41]

Answer:

A=4.5u^2

Step-by-step explanation:

The integral of a function gives you the area under the curve, the subtraction of one of the areas from the other will give you the area in between.

The limits of integration are the points where the curves intersect each other(take the curves has a system of equation and solve for x and y):

y=3x, y=x^2\\3x=x^2\\x^2-3x=0\\x(x-3)=0\\x_1=0\\x-3=0\\x_2=3

y_1=3x_1=3(0)=0\\y_2=3x_2=3(3)=9

The integral will be the subtraction of the curve y=3x and y=x^2  (In the graph you can see y=3x is the upper curve):

\int\limits^3_0 {3x-x^2} \, dx =\left\frac{3x^2}{2}-\frac{x^3}{3}\right|^3_0=\frac{3(3)^2}{2}-\frac{(3)^3}{3}-\left(\frac{3(0)^2}{2}-\frac{(0)^3}{3}\right)\\\int\limits^3_0 {3x-x^2} \, dx =\frac{27}{2}-\frac{27}{3} =13.5-9=4.5u^2

6 0
2 years ago
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