A grocery store estimates that customers arrive at the rate of 15 per hour. The cashier can serve customers at a rate 20 per hour. Calculate the average number of customers in a line. 3 5.32 2 2.25 1 1.25 1.75 2.50 3.50 1.50
<ol><li> A grocery store estimates that customers arrive at the rate of 15 per hour. The cashier
can serve customers at a rate 20 per hour. Calculate the average number of customers in a line. <table><tbody><tr><td> 3 </td> </tr><tr><td> 5.32 </td> </tr><tr><td> 2 </td> </tr><tr><td> 2.25 </td> </tr><tr><td> 1 </td> </tr><tr><td> 1.25 </td> </tr><tr><td> 1.75 </td> </tr><tr><td> 2.50 </td> </tr><tr><td> 3.50 </td> </tr><tr><td>1.50</td> </tr></tbody></table></li></ol>