Bank manager Art Hill wants to determine the percent of time that tellers are working and idle. He decides to use work sampling, and his initial estimate is that the tellers are idle 18% of the time. (Round all intermediate calculations to at least two decimal places before proceeding with further calculations.) The number of observations that need to be taken by Hill to be 95.45% confidence that the results will not be more than 4% from the true result

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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Determining effects of stock splits oracle corp has had the following stock splits since its inception. effective date split amount october 12, 2000 2 for 1 january 18, 2000 2 for 1 february 26, 1999 3 for 2 august 15, 1997 3 for 2 april 16, 1996 3 for 2 february 22, 1995 3 for 2 november 8, 1993 2 for 1 june 16,1989 2 for 1 december 21, 1987 2 for 1 march 9, 1987 2 for 1 a. if the par value of oracle shares was originally $2, what would oracle corp. report as par value per share on its 2015 balance sheet? compute the revised par value after each stock split. round answers to three decimal places.