Examine the information about a pilot study provided below and answer the following questions. As part of the qualitative phase of the pilot study, the researcher conducted semi-structured interviews with the management teams of ten (10) South African manufacturing firms. The interviews revealed that the firms' tactical operational decisions were primarily driven by their perceptions of key indicators of shifting economic fundamentals. These included office park occupancy rates, changes in unemployment rates, fluctuations in job advertisements, and variations in consumer spending. In response to these economic signals, the firms made several tactical adjustments, such as modifications to production schedules, inventory management, marketing expenditures, and hiring decisions. Following the qualitative analysis, the researcher collected primary data on specific instances of these key economic indicators and their impact on the firms' operational decisions during the 2023-2024 period. The research data is presented in Table 1 below. 4.1 By examining the output presented in Figures 4.2 to 4.13, formulate the set of null and alternative hypotheses that were tested in the pilot study for each of the four (4) outcome variables (i.e., production schedule adjustment, inventory management adjustment, marketing expenditure adjustment, and hiring decision adjustment). Your response should highlight the following: 1. Four (4) regression analyses that were conducted in the pilot study. 2. For each one, formulate appropriate null and alternative hypotheses. 3. The null and alternative