Part 1: Zeva Security Products gathered the following monthly warehouse support costs and unit sales data for January through June 2023: a) Use the High-Low Method to determine the cost function for warehouse support costs. You must present calculations to support the amounts in your cost functions. ( 6 points) supporting caiculations required: b) Predict the amount of warehouse support costs for July 2023 when Zeva Security Products expects to Part 2: Darvish Perfecto prepared a regression analysis of its monthly Manufacturing Maintenance Costs that produced the following results: a) Use the regression results to create a cost formula for the monthly Manufacturing Maintenance Costs. Predict the amount of Manufacturing Maintenance Costs for a month when Darvish Perfecto expects to produce 72,000 units. (4 polnts) Select the best answers to each of the following questions. Write the corresponding letter in the space provided. (2 points each =6 points) b) Which of the following statements correctly interprets the regression results relative to the statistical significance of the relationship between the Manufacturing Maintenance Costs and the Units Sold? A. The relationship is statistically significant because t Stat 6.838> Threshold Value of the t Stat 2.228 B. The relationship is not statistically significant because t Stat 6.838> Threshold Value of the t Stat 2.228 C. The relationship is statistically significant because t Stat 6.838>R20.824 D. The relationship is not statistically significant because R20.824