Older people often have a hard time finding work. aarp reported on the number of weeks it takes a worker aged 55 plus to find a job. the data on number of weeks spent searching for a job contained in the file jobsearch are consistent with the aarp findings (aarp bulletin, april 2008). a) provide a point estimate of the population mean number of weeks it takes a worker aged 55 plus to find a job. b) at 95% confidence, what is the margin of error? c) what is the 95% confidence interval estimate of the mean? d) discuss the degree of skewness found in the sample data. what suggestion would you make for a repeat of this study?

Which of the following statements are true? (select all that apply.) a quasi-static process is one in which the system is never far from being in equilibrium. when a system can go from state 1 to state 2 by several different processes, the amount of heat absorbed by the system will be the same for all processes. the internal energy of a given amount of an ideal gas depends only on its absolute temperature. when a system can go from state 1 to state 2 by several different processes, the work done on the system will be the same for all processes. when a system can go from state 1 to state 2 by several different processes, the change in the internal energy of the system will be the same for all processes. for any substance that expands when heated, its cp is greater than its cv.