A list of activities that generate quality costs is provided below. For each activity, indicate whether it realtes to a prevention $($P$),$ appraisal $($A$),$ internal failure $($I$),$ or external failure $($E$)$ activity.

$1)$ Inspecting raw materials

$2)$ Training workers in quality techniques

$3)$ Collecting data on a manufacturing process

$4)$ Overtime labor to rework products

$5)$Cost of additional materials to rework a product

$6)$ Inspecting finished goods inventory

$7)$ Scrapping defective goods

$8)$ Lost sales due to customer dissatisfaction