Answer:
a. E(x) = 5.2000%
b. Variance = 122.16
Standard Deviation = 11.05
Step-by-step explanation:
Given
Scenario Probability Rate of Return
1 0.20 −16 %
2 0.40 7 %
3 0.40 14 %
a.
Expected Rate of Return = E(x)
E(x) = (-16% * 0.20) + (0.40 *7%) + (0.40 * 14%)
E(x) = -3.2% + 2.8% + 5.6%
E(x) = 5.2%
E(x) = 5.2000%
b.
Variance also known as the average of the squared differences from the Mean.
To calculate variance, start by calculating the mean, or average, of your sample. Then, subtract the mean from each data point, and square the differences. Next, add up all of the squared differences
Variance =
V = σ²= (−16 − 5.2)² * 0.20 + (7 − 5.2)² * 0.40 + (14 − 5.2)² * 0.40
V = σ² =122.16
Standard Deviation = σ = √SD
σ = √122.16
σ = 11.05124427383631
σ = 11.05 --- Approximated
Answer:
i dont really know maybe you should go back and look at the lesson :P
Step-by-step explanation:
look up|:
Answer:330
Step-by-step explanation:
15*22=330
Answer:
AA similarity (Postulate).
Step-by-step explanation:
The AA Similarity Postulate states that <em>two triangles are similar if all their corresponding angles are congruent, and their corresponding sides are proportional.</em>
In this case:
∡ACE ≅ ∡DBE (Given)
∡BED ≅ ∡AEC (Vertical Angles Theorem)
For Proportionality, you will have to get more information on the measurements of the sides. As side measurements are not given, you cannot use any similarities based on sides to prove the similarities of the triangles.