MATHEMATICS HIGH SCHOOL

Annual Return...Probability15% ...0.2
20%...0.4
30% ...0.3
35% ...0.1
The table gives the probability distribution of the annual rate of return on the stock of MNP Company, Inc.

The expected value of the rate of return is ______%.

Answers

Answer 1
Answer:

Answer: The expected value of the rate of return is 23.5%.

Step-by-step explanation:

Since we have given that

Annual Return                   Probability

15%                                       0.2

20%                                      0.4

30%                                      0.3

35%                                      0.1

We need to find the expected value of the rate of return:

As we know the formula for "Expected value ": E(x)=\sum xp(x)

So, it becomes,

E(X)=15* 0.2+20* 0.4+30* 0.3+35* 0.1=23.5\%

Hence, the expected value of the rate of return is 23.5%.
Answer 2
Answer: Calculation:
15%*0.2 + 20%*0.4 + 30%*0.3 + 35%*0.1 = 23.5%

Answer:
The expected value of the rate of return is 23.5%

 

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Step-by-step explanation:

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Answers

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Caitlin had $402 in her bank account. She withdrew $15 each week to pay for a swimming lesson. She now has $237.a. Write an equation that can be used to find the number of swimming lessons that she paid for.
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Answers

a.) Let x be the number of swimming lessons she had, then
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b.) 15x = 402 - 237 = 165
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Answers

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The perimeter of a rectangle is 38 inches. If the length of the rectangle is 14 inches, which equation could be used to find the width, x?

Answers

Perimeter, P = 2*(L + W)

Length, L = 14, Width = x

 P = 2*(L + W)

38 = 2*(14 + x).

2*(14 + x) = 38,  is the equation used to find x.

Let's go ahead and solve for x, though the question did not ask us to solve it. 

 14 + x = 38/2

  14 + x = 19

       x = 19 - 14

        x = 5

Width is 5 inches.

Answer:        x = 19 - 14

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Step-by-step explanation:

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Answers

Is any other information given? Because I do not see any way this can be solved unless we know the perimeter, area, or even one of the angles, anything that can be used to form a relationship between the 3 sides.
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