1. Answer the following questions: a) The new promotional offer for the quick commerce app should be changed if less than 30 percent of the consumers like it. Formulate the hypothesis. [2.5 Marks] b) What is the difference between cluster and systematic sampling? State one possible application of each. [2.5 Marks] c) In one study, attitude towards plant-based meat was measured to assess the demand in the start-up capital of India. What do you mean by reliability of measurement scale in this case? The research firm used test-retest approach to determine reliability in the given study. Is there a problem with the approach? Explain. [2.5 Marks] d) After receiving some complaints from some consumers, the D2C footwear start-up decided to redesign its packaging. Two new designs, Y and Z, were developed and tested against the current design, X. A total of 165 respondents were randomly selected and 55 respondents were assigned to each of three design conditions. Respondents were asked to evaluate the effectiveness of the design on 7-point scale (1= poor, 7=excellent). State the hypothesis