aestion 15 Chree workers on the same job showed the following results over a long period of time: Worker Mpho Tumelo Siphiwe T: Mean time of completing the job (minutes) 25 24 19 S: Standard deviation...

Extracted text: aestion 15 Chree workers on the same job showed the following results over a long period of time: Worker Mpho Tumelo Siphiwe T: Mean time of completing the job (minutes) 25 24 19 S: Standard deviation (minutes) 6. 7 Calculate the coefficient of variation of the time that each worker required to complete the job. The worker that appears to be more consistent in the time he required to complete the job [1] is Tumelo. [2] is Mpho. [3] is Siphiwe. [4] can only be determined if more information is provided.