I want the answer with a clear explanation . I will give you the best rate . Thank you.

QUESTION 1 A researcher is interested to study the Ewallet usage among customers of Pasaraya Intan Belian. The researcher intended to obtain information from 50 respondents by interviewing every 5'\" customer of Pasaraya Intan Etelian on a particular day. The respondents are asked on their mantal status, age, the frequency of using Evvallet (never, seldom, often, very often}, the preferred Evrallet provider {BoasL |Grabpay, Touch n Go, BigPay} and the last E wallet transaction amount {RM}. a} State the population and the sample of the study. (2 marks} b} Identify THREE [3} variables from the study. Hence, state its scales of measurement. {3 marks} c) Identify the sampling method used. {1 mark} d} Give DNE {1} advantage of the data collection method used by the researcher. (1 mark}