your first job is at a not-for-profit company that people who are looking for jobs come to for help in that effort. You're assigned the task to evaluate the effectiveness of a new job training program that your employer is considering instituting. You decide to run a study in which job seekers are randomly assigned into two large groups. Group A is the "control group," and they are given the standard preparation that has always been given -- a one-hour presentation of how to answer typical questions in an interview, how to dress, etc. Group B is given a one-week workshop that goes into much greater detail about how to interview, including, for example, having them participate in a series of mock interviews. Individuals in both groups are tracked and eventually all of them get jobs. The time it took to acquire a job in both groups is normally distributed. For Group A it took a mean of 25.0 days with a standard deviation of 4.0 days; for Group B it took a mean of 20.0 days with a standard deviation of 5.0 days. Your employer will judge the new job training program a success if it results in a greater percentage (than is the case in the control group) of job seekers who got a job within 28.0 days. (a) Would you consider the new job training program a success, where, once again, success is defined solely by whether it results in a greater percentage (than is the case in the old program) of job seekers in Group B who got a job within 28.0 days than was the case in Group A? (b) If Group B job seekers who took over 30.0 days to get a job are eligible for a special program designed to help them *keep* their jobs, then what percentage of all people in Group B would be eligible for such a program (to 1 decimal place, as in 74.3%)?
your first job is at a not-for-profit company that people who are looking for jobs come to for help in that effort. You're assigned the task to evaluate the effectiveness of a new job training program that your employer is considering instituting.
You decide to run a study in which job seekers are randomly assigned into two large groups. Group A is the "control group," and they are given the standard preparation that has always been given -- a one-hour presentation of how to answer typical questions in an interview, how to dress, etc. Group B is given a one-week workshop that goes into much greater detail about how to interview, including, for example, having them participate in a series of mock interviews.
Individuals in both groups are tracked and eventually all of them get jobs. The time it took to acquire a job in both groups is
Your employer will judge the new job training program a success if it results in a greater percentage (than is the case in the control group) of job seekers who got a job within 28.0 days.
(a) Would you consider the new job training program a success, where, once again, success is defined solely by whether it results in a greater percentage (than is the case in the old program) of job seekers in Group B who got a job within 28.0 days than was the case in Group A?
(b) If Group B job seekers who took over 30.0 days to get a job are eligible for a special program designed to help them *keep* their jobs, then what percentage of all people in Group B would be eligible for such a program (to 1 decimal place, as in 74.3%)?
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