The possible returns from investing in PrimeOne share are as follows:

State of economy Probability of state of economy Return if state occurs

Boom 0.4 12%

Growth 0.3 11%

Normal 0.2 9%

Recession 0.1 8%

Based on the above information, calculate the following for PrimeOne share:

i) Expected return

ii) Standard deviation of return

iii) Coefficient of variation