Question: For the past two years, Value Mobile has been working to improve the quality of its phones. Data for 2019 and 2020 follows (in thousands

For the past two years, Value Mobile has been working to improve the quality of its phones. Data for 2019 and 2020 follows (in thousands of phones):

2019 2020

Cell phones produced and shipped

3819 16920

Number of defective units shipped 142 498

Number of customer complaints 234 383

Units reworked before shipping 185 867

Manufacturing cycle time (days) 17 19

Average customer response time (days) 33 31

Required:

  1. For each year, 2019 and 2020, calculate the following:
  2. percentage of defective units shipped
  3. customer complaints as a percentage of units shipped
  4. percentage of units reworked during production
  5. manufacturing cycle time as a percentage of total time from order to delivery

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