Acompany has developed a new engine whose average lifetime is unknown. in order to estimate this average, 100 engines are randomly selected from a large production line and tested; their average lifetime is found to be 11 years. the 11 years represents a: a. parameter. b. statistic. c. sample. d. population.

Match each of the terms below with an example that fits the term. a. fungibility the production of gasoline b. inelasticity the switch from coffee to tea c. non-excludability the provision of national defense d. substitution the demand for cigarettes

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”

Acollege registrar's office requires you to first visit with one of three advisors and then with one of two financial professionals. this system best described as which of the following? a. single server, single phase systemb. multiple server multiphase systemc. multiple server, cross phase systemd. single server, multiphase systeme. multiple server, single phase system