Answer:
The Mean return = 0.8*16.5% + 0.2*-11.6%
The Mean return = 0.132 + (-0.0232)
The Mean return = 0.132 - 0.0232
The Mean return = 0.1088
The Mean return = 10.88%
Variance = 0.8*(16.5%-10.88%)^2 + 0.2*(-11.6%-10.88%)^2
Variance = 0.8*(5.62%)^2 + 0.2*(-0.72%)^2
Variance = 0.012634