You are given the following probability distribution for CHC Enterprises:

State of Economy Probability Rate of return

Strong $0\mathrm{.}2020\%$

Normal $0\mathrm{.}5510\%$

Weak $0\mathrm{.}25-4\%$

What is the stock's expected return? Do not round intermediate calculations. Round your answer to two decimal places.

$\%$

What is the stock's standard deviation? Do not round intermediate calculations. Round your answer to two decimal places.

$\%$

What is the stock's coefficient of variation? Do not round intermediate calculations. Round your answer to two decimal places.