In the state of FL you'll be assessed 4 points.
As long as the rate of return is bigger than the inflation, the value and amount of money will increase and so will the purchasing power: the correct answer is "it will increase".
For example, if you invest 100 dollars, you will receive 108 dollars back, and you'd need 103 dollars to have the same value of money as before - but you have more.
Answer: The standard deviation of the stock is 3.23 percentage
Explanation:
First we shall calculate the epected weighted average return of the stock.
We shall multiply the probability of the scenario with its expected return and then take the sum of the expected returns of different scenarios,
E(x) = (0.2 x 14%) + (0.7 x 8%) + (0.1 x 2%)
E(x) = 8.6%
We shall use the follwing formula to calculate the Variance of the stock,
σ²(x) = ∑ P() × [ - E(r)]²
σ²(x) = (0.2) (0.14 - 0.086)² + (0.7) (0.08 - 0.086)² + (0.1) (0.02 - 0.086)²
σ²(x) = 0.001044
To find the standar deviation,
σ(x) =
σ(x) = 0.0323109
in percentage it would be 3.23%