For the past 2 years, Global Cell Phones has been working to improve the quality of its phones. Data for 2019 and 2020 follows (in thousands of phones): (Click the icon to view the information.) Read the requirements. Requirement 1. For each year, 2019 and 2020, calculate: a. Percentage of defective units shipped Select the formula you will use to calculate the percentage. Then enter the amounts in the formula and calculate the percentage for both 2019 and 2020. (Round the percent to two decimal places, X.XX% ) Data table 1. For each year, 2019 and 2020 , calculate the following: a. Percentage of defective units shipped b. Customer complaints as a percentage of units shipped c. Percentage of units reworked during production d. Manufacturing cycle time as a percentage of total time from order to delivery 2. Referring to the information computed in requirement 1 , explain whether Global Cell Phones' quality and timeliness have improved