Samuelson electronics has a required payback period of three years for all of its projects. currently, the firm is analyzing two independent projects. project a has an expected payback period of 2.8 years and a net present value of $6,800. project b has an expected payback period of 3.1 years with a net present value of $28,400. which projects should be accepted based on the payback decision rule?
a. project a only.
b. project b only.
c. both a and b.
d. neither a nor b.
e. either, but not both projects.

Running and sleep. sufficient sleep is important for adolescents for both their neural and psychological development. despite this, daytıme sleepiness and poor physical and psychological functioning related to chronic sleep disturbances are common. there is a growing body of evidence that exercise is associated with both better sleep and improved psychological functioning sixty participants were recruited from a high school in northwesten switzerlandthey were randomly assigned to either a running group or a control group, 30 to each group the running group ran every moming for a little over 30 minutes on weekdays for a three-week period. all participants used a sleep log for subjective evaluation of sleep, and sleep was also objectively assessed at the beginning and end of the study using a sleep electroencephalographic device that measured quantities such as sleep efficiency and time spent in the four different sleep phases. running was found to have a positive impact on both objective and subjective measures of sleep functioning what are the explanatory variable(s) and the response variable(s)? (a) outline the design of the experiment (b) (c) here are some more details on the treatment and control groups. all participants arrived at school at 7 a.m., and the running group did two laps on the track and then ran cross countrv in groups of at least four people for 30 minutes the control group remained seated at the track, worked on horpework. and interacted with each other. when the runners returned, all participants prepared for school and ate a breaktast that was provided. iwhy do you think the experimenters had the control group arrive at 7 am interact withdassmates and have breaktast together? explain. do you think having the control eroup do these activities is important for the types of conclusion that can be reached? how?

Which of the following is a problem in the health care system of the united states? a. too many doctors in rural areas b. too many doctors who are general practitioners c. fraud d. costs that are too low

Which statement best explains “the culture of life” (plato) plz : ( a. it is the belief that all life is sacred and the implementation of policy in line with that vision b. it is the idea that human embryos should be used to find cures to medical conditions c.it is the belief that god created the world and that no one should a metal in affairs of life and death d. it is the belief that human beings have the right to determine when and how they should die