You have drafted a questionnaire to find out the reasons for decline in sales of a product. Pretest your questionnaire with hypothetical data.

1. You have drafted a questionnaire to find out the reasons for decline in sales of a product. Pretest your questionnaire with hypothetical data. Suggest the modifications required based on the results in the drafted questionnaire.2. What is a Semantic Differential Scale? Explain the steps in construction of the scale. When will you use this scale?3. Discuss the role of modeling in research in managerial decisions making with an appropriate illustration. How is model validation done?4. Write short note on the following:a. Factor loading and factor analysisb. Different types of experimental design5. A sample of 48 tools produced by a machine shows the following sequence of good (G) and defective (D) tools:G G G G G G D D G G G G G G G G G G D D D D G G G G G G D G G G G G G G G G D D G G G G G D G GTest the randomness at the 0.05 significance level.