1. An online retail company would like to increase its sales revenue. To do this they go to a popular shopping area and ask 250 persons who are willing to participate in the survey "What is the number one reason you go back to an online site to make a purchase?" (note respondents can only give one answer). a) What is the population for this study? b) What is the sample for this study? c) What sampling method was used to select the respondents for this study? d) Is this study using primary or secondary data? e) What type of variable (nominal, ordinal, interval, ratio) is the variable being studied (i.e. reason to back to a website to make a purchase)