Inspecting final products.
final products are sometimes selected to go through a complete inspection before leaving the production facility.
suppose that 8% of all products made at a particular facility fail to conformto specifications.
furthermore, 55% of all nonconforming items are selected for complete inspection while 20% of all conforming items are selected for complete inspection.
given that a randomly chosen item has gone through a complete inspection, what is the probability the item is nonconforming?

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."