The manager of$$ Perrotti's Pizza collects data concerning customer complaints about pizza delivery.

$$ LOADING...

Problem

Frequency

A$.$ Topping is stuck to box lid

$20$

B$.$ Pizza arrives late

$37$

C$.$ Wrong topping or combination

$8$

D$.$ Wrong style of crust

$7$

E$.$ Wrong size

$8$

F$.$ Pizza is partially eaten

$2$

G$.$ Pizza never arrives

$8$

Part $2$

a$.$ Choose the correct Pareto chart below to identify the$$ "vital few" delivery problems.

b$.$ The manager of$$ Perrotti's Pizza is attempting to understand the root causes of late pizza delivery and has asked each driver to keep a log of specific difficulties that create late deliveries. After one$$ week, the logs included the following$$ entries:

delivery vehicle broke$$ down, couldn't make it across town to deliver second pizza in$$ time, couldn't deliver four pizzas to four different customers in$$ time, kitchen was late in producing$$ order, got$$ lost, order ticket was lost in$$ production, couldn't read address on ticket and went to wrong house.

Organize these causes into a$$ cause$-$and$-$effect diagram. Complete the following diagram.

Material

Machinery

Methods

Manpower

I

II

III

IV

Late production

Not familiar with service area

Late delivery

Service area too large

Match each number in the chart with the corresponding cause.

Number

Cause

I

Misunderstood address

II

Vehicle broke down

III

Scheduling too many deliveries on one trip

IV

Misunderstood address