Survey method: Mall intercept( People who go to Little Sichuan restaurant in QV from 11am to 9pm on Saturday, Sunday and Monday. Sampling Technique: Systematic sampling: Stand outside the store and survey 3 customers every hour. Explanation: Because the restaurant does not have the customers list, we can use the set of direction. As for the mall intercept, we separate it out to different time of the week to capture different segments. It can show the representative of the sampling. b. Sample frame: A list of customers Survey method: Mail: Mailing these overseas customers a survey to ask them the in-patient experience. Sampling techniques: Random sampling: Choosing 200 overseas patient from the customer list. Explanation: The hospital must have patients contact details so that they can send e-mail to the patient. Additionally, randomly choosing 200 overseas patients from the list means that every patient has the equal chance to receive the survey, which show the Sampling is appropriate. c. Sample technique: Systematic sampling: choosing every 5 th unlicensed sex workers and go to their home to conduct the survey.
Explanation: picking every 5 unlicensed sex workers can reduce the random error and increase the representativeness of the sample.
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