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Which type of sampling method is being employed in the following example:
“A post office manager was in charge of 11 postal delivery people. He wanted to do
a study on the customer's level of satisfaction for the customers he works with. So,
he asked 3 of his delivery people to ask every person on their delivery route to rate
their satisfaction of mail service on a scale of 1 to 10."


Sagot :

Answer:

Step-by-step explanation: