1. I will survey employees online using online surveys, is it an appropriate approarch to select a random sample? (micro data needed aren't available for my country) [I'm in a Gulf country where there are no people below poverty line and about 92% of population uses internet that is even publicly avaible) Info will be spread through instant messaging and emails (asking university to send the email to staff and students who may pass it to others and other national social media accounts)
2. Due to some time limitation and in order to meet graduation deadline I can collect about 150 to 200 replies. Is it workable?
3. The variables I am thinking about are (Salary and Wages, Working Hours, Educational Level, Years of working experience, average base starting salary after high school, training program length, gender, parents education). Are they enough to conduct the research?
4. Can you suggest another apliccable model?