12. A task force to encourage car pooling did a study of one-way commuting distances (in...

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12. A task force to encourage car pooling did a study of one-way commuting distances (in miles) of workers in the downtown Dallas area. A random sample of 60 of these workers was taken. The commuting distances of the workers in the sample are given in the following grouped frequency distribution: Class limit (distance in miles) Frequency 1- 10 18 11 - 20 24 21 - 30 10 31 - 40 41 - 50 Find the mean commuting distance for this sample workers. 4. 12. A task force to encourage car pooling did a study of one-way commuting distances (in miles) of workers in the downtown Dallas area. A random sample of 60 of these workers was taken. The commuting distances of the workers in the sample are given in the following grouped frequency distribution: Class limit (distance in miles) Frequency 1- 10 18 11 - 20 24 21 - 30 10 31 - 40 41 - 50 Find the mean commuting distance for this sample workers. 4.