Identify the types of sampling techniques used in each of the following situations: A survey on business activities is

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Identify the types of sampling techniques used in each
of the following situations:


A survey on business activities is to be conducted in
the state of Kelantan. The population is divided into rural and
urban areas. About five per cent of the rural and urban population
are to be selected randomly.
A sample of workers from clothing department is
obtained by selecting every 25th worker from the list
given by the department’s manager.
Random numbers generated by a computer for the
selection of serial numbers of television for
testing.