$1$ Modeling Interarrival Time

This section is meant to show you the usefulness of Excel in deriving the basic descriptive statistics for the interarrival time $A.$ To begin, notice there are two columns labeled "Arrivals $($per minute$)"$ and "Interarrival time $($minutes$)."$ The first column details $n=500$ samples of arrivals per minute during a particularly busy period for a department store. The second column will be used to measure the corresponding interarrival times. To begin the analysis, in cell B$2,$ type