Question nine
a). The coefficient of variation is the measure of dispersion in a given dataset. When data
is closer together and concentrated towards the mean, then the coefficient of variation is
minimal and the data has minimal or no outliers. The coefficient of variation is obtained
by dividing the standard deviation of a dataset by its mean value.
Question ten
a). Batching reduces the need to have more space in the bar. Batching allows for the customer to
make orders make payments within pre-agreed time periods. The payment is done online through
a system that is designed to be very secure and convenient. The agreement may be to make the
billing once a month, twice a month.
Question eleven
d). Neither the workload nor the time cycle for loan processing will be interfered with by the
changes. All the loan applications will still need to be processed and the time spent in processing
each loan application will not be affected. In fact, it will take more time to process the
applications due to the waiting time.
Question twelve
a) Andon. When andon is used in manufacturing, it makes the process readily visible to
plant managers and personnel. It also makes manufacturing easier to ensure processes are
being carried out in a manner that is productive and very efficient. It has the ability to
notify the management and workers should there be quality problems in the
manufacturing process (Corry, 2018).
Question thirteen
The correct answer is (a) with a value of 3 minutes.
Arrival (μ ¿ = 45 customers/hour. In one minute, the number of customers served equals
60
45 =1.3333 customers/minute
Service ( ʎ ¿=1 customer /minute

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