The expected rate of return on the market is 12% and the risk-free rate is 7%. The standard deviation on the return on the market is 15%. One investor creates a portfolio on the efficient frontier with an expected return of 10%. Another creates a portfolio on the efficient frontier with an expected frontier with an expected rate of return of 20%. What is the standard deviation of the returns of the two portfolios

The digby's workforce complement will grow by 20% (rounded to the nearest person) next year. ignoring downsizing from automating, what would their total recruiting cost be? assume digby spends the same amount extra above the $1,000 recruiting base as they did last year. select: 1 $2,840,000 $3,408,000 $570,000 $475,000

Who is better at multi-tasking? in business, employees are often asked to perform a complex task when their atten-tion is divided (i. e., multi-tasking). human factors (may 2014) published a study designed to determine whether video game players are better than non–video game play-ers at multi-tasking. each in a sample of 60 college stu-dents was classified as a video game player or a non-player. participants entered a street crossing simulator and were asked to cross a busy street at an unsigned intersec-tion. the simulator was designed to have cars traveling at various high rates of speed in both directions. during the crossing, the students also performed a memory task as a distraction. two variables were measured for each student: (1) a street crossing performance score (measured out of 100 points) and (2) a memory task score (measured out of 20 points). the researchers found no differences in either the street crossing performance or memory task score of video game players and non-gamers. “these results,” say the researchers, “suggest that action video game players [and non-gamers] are equally susceptible to the costs of dividing attention in a complex task”

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