A mortgage process improvement team suspects that home loans over $500,000 take longer than less expensive loans.

[answerhappygod]

A mortgage process improvement team suspects that home loans over $500,000 take longer than less expensive loans. Which of the following could help them verify this as a root cause of lengthy mortgage Lead Time?

Stratify Lead Time data by large and small loan amounts and see if a Box Plot comparison shows a significant difference
Stop offering home loans in amounts greater than $500,00 and see if Lead Time decreases
Expedite all home loans of $500,000 or greater to ensure they have acceptable Lead Times
Monitor the staff offering home loans to see if they are spending their time wisely