Each answer in essay format please!!

Answer five questions correctly - 100 points 1. Discuss the role of observation as a marketing research method and discuss four of the many types of observable phenomena, giving an example of each. 2. Explain the process for experimental research and survey research. How do they differ from each other? Compare and contrast the four different levels of scale measurement. Give an example of each. Name and describe the components of construct validity. Why is this important in marketing research? Explain what reliability is empirical research and discuss how it is assessed. A smartphone manufacturer is conducting research regarding how smartphones are used in business. Apply the stages the researcher should go through in the selection of a sample for this research study