A New Shopping Mall Is Considering Setting Up an Information

question 17

Essay

A new shopping mall is considering setting up an information desk manned by one employee.Based upon information obtained from similar information desks, it is believed that people will arrive at the desk at the rate of 15 per hour.It takes exactly two minutes to answer each question.It is assumed that arrivals are Poisson.
(a)Find the probability that the employee is idle.
(b)Find the proportion of time that the employee is busy.
(c)Find the average number of people receiving and waiting to receive information.
(d)Find the average number of people waiting in line to get information.
(e)Find the average time a person seeking information spends at the desk.
(f)Find the expected time a person spends waiting in line to have his question answered.

Understand the various categories of quality costs: prevention, appraisal, internal failure, and external failure.

Identify specific examples of prevention costs in quality management.

Identify specific examples of appraisal costs in quality management.

Identify specific examples of internal failure costs in quality management.

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Definitions:

Distribution

In statistics, the way in which values of a variable or occurrences of an event are spread out or dispersed across possible outcomes or ranges.

Pie Chart

A circular statistical graphic divided into slices to illustrate numeric proportion, where the arc length of each slice is proportional to the quantity it represents.

Bar Graph

A chart that presents categorical data with rectangular bars with heights or lengths proportional to the values they represent.

Averages

A measure of central tendency, calculated by summing all values and dividing by the number of values.