If the following jobs are sequenced according to the SLACK rule,then the mean completion time (in days) for all jobs is (assume zero for today's date) 
Definitions:
Dependent Variable
In research, the variable being tested and measured, which is expected to change due to manipulations of the independent variable.
Sensation-Seeking Test
A psychological assessment that measures an individual's propensity for seeking novel and intense stimuli and their willingness to take risks for such experiences.
Observation Period
A specific time frame during which subjects or conditions are monitored and data is collected in a study.
Correlational Research
Correlational research is a method of non-experimental research used to study the relationship or association between two or more variables without manipulating them.
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