Super City Discount Department Store is open 24 hours a day.The number of cashiers need in each four-hour period of a day is listed below. 
If cashiers work for eight consecutive hours,how many should be scheduled to begin working in each period in order to minimize the number of cashiers needed?
Definitions:
Continuous Random Variable
A variable that can take an infinite number of values within a given range, often associated with measurements.
Measured Weight
The weight of an object or individual as determined through the use of scales or other measurement tools.
Binomial Experiment
An experiment or trial that fits the criteria of having a fixed number of trials, only two possible outcomes, independent trials, and a constant probability of success.
Number of Successes
In a statistical experiment, it refers to the count of times an event of interest occurs.
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