Batman Stock has exhibited a standard deviation in stock returns of 0.5, whereas Superman Stock has exhibited a standard deviation of 0.6. The correlation coefficient between the stock returns is 0.5. What is the variance of a portfolio composed of 70 percent Batman and 30 percent Superman?

A buyer's decisions are influenced by ________ such as the buyer's age and life stage, vocation, level of affluence, lifestyle, personality, and self-identity

A) personal characteristics B) situational factors C) perceptions D) social factors E) psychological factors

A process for negotiating a union contract and for administrating the contract after it has been negotiated is ________

A) collective bargaining B) grievance procedure C) mediation D) arbitration E) conciliation