Final answer:
Exxon Mobil (XOM) has more systematic risk due to its higher beta of 1.9, while General Motors (GM) has more total risk because of its higher volatility at 50%.
Step-by-step explanation:
To determine which stock has more systematic risk and which has more total risk, we need to understand the role of beta and volatility. The beta represents the systematic risk of a stock relative to the overall market, where a beta greater than 1 indicates more systematic risk than the market. Volatility, measured by standard deviation, indicates the total risk of the stock including both systematic and unsystematic risk.
Between General Motors (GM) with a beta of 1.5 and Exxon Mobil (XOM) with a beta of 1.9, Exxon Mobil has more systematic risk since its beta is higher. For total risk, we look at the volatility (standard deviation). GM has a volatility of 50% while XOM has a volatility of 35%. Thus, GM has a higher total risk compared to XOM due to its higher volatility.