Week 7 Lab Step 1: Number of Trucks in Queue | |
Question 1: For each of the four work team sizes, calculate the expected number of trucks waiting in the queue to be unloaded. Size of team | Number of trucks in queue | 2 | 3.2 | 3 | .5 | 4 | .27 | 5 | .12 |

Step 2: Expected Time in Queue | |
Question 2: For each of the four work team sizes, calculate the expected time in the queue; that is, the expected time that a truck has to wait in line to be unloaded. Size of team | Expected time in queue | 2 | .8 hrs | 3 | .125 hrs | 4 | .067 hrs | 5 | .030 hrs |

Step 3: Immediate Unload Probability | |
Question 3: For each of the four work team sizes, what is the probability that a truck cannot be unloaded immediately? Size of team | Probability that truck must wait | 2 | 80% | 3 | 50% | 4 | 40% | 5 | 30% |

Step 4: Lowest-Cost Team | |
Question 4: Which of the four work team sizes results in the lowest cost to Wayne? Size of team | Total cost | 2 | $268.00 | 3 | $102.00 | 4 | $96.00 | 5 | $95.32 |

Step 5: Faster Forklift Rental | |
Question 5: Wayne is also considering rental of a forklift to use in truck unloading. A team of only two would be needed, but the hourly cost would be $38 per hour ($28 for the workers and $10 for the forklift). The two workers could unload a truck in five minutes. Should Wayne rent the forklift?
With a two-person crew and a forklift the cost will be $38 per hour. Based on the lowest cost to Wayne for the four work team sizes, he should adopt a two-man crew and use a