The ordering business process starts with the receipt of a request for work order from a customer. Upon the receipt of this request, the ordering department of Sparks estimates the expected usage of supplies, parts and labor and prepares a quote with the estimated total cost for the maintenance activity [takes 6 Minutes]. If the customer's vehicle is insured [90% of vehicles are insured], the ordering department interacts with the insurance department to retrieve the details of the customer's insurance plan [takes 40 minutes] so that these can be attached to the quote. The ordering department then sends the quote to the customer, who can either accept [acceptance rate is 80%] or reject the quote by notifying the ordering department [takes 10 minutes]. If the customer accepts the quote, the ordering department contacts the warehouse department [takes 25 minutes] to check if the required parts are in stock [takes 30 minutes] before scheduling an appointment with the customer [takes 12 minutes]. If some parts are not in stock [stock out probability is 30%], the ordering department orders the required parts [takes 50 minutes] by interacting with a certified reseller and waits for an order confirmation from the reseller [takes 50 minutes], to be received within three days. If it is not received [ with 25% chance], the order department orders the parts again from a second reseller. If no reply is received from the second reseller too, the order department notifies the customer that the parts are not available [takes 20 Minutes] and the process terminates. If the required parts are in stock or have been ordered, the ordering department interacts with an external garage to book a suitably equipped service bay and a suitably qualified mechanic to perform the work [takes 65 Minutes]. A confirmation of the appointment is then sent by the garage to the order department [takes 10 minutes] which forwards the confirmation to the customer [takes 10 minutes]. The customer has one week to pay Sparks, otherwise the ordering department cancels the work order [takes 25 minutes] by sending a cancellation notice to both the service bay and the mechanic that have been booked for this order. If the customer pays in time, the work order is performed.

1. Make a BPMN model for the following business process for ordering maintenance activities at Sparks.

2. Compute the cycle time for the current status of the process.

3. Generate an alternative to the process, using heuristics discussed in Week 11.

4. Create BPMN model for the alternative process.

5. Calculate the cycle time of the alternative process. Make and mention your assumptions for the cycle time of the alternative process if required.