Question

1. A certain factory operates three different shifts. Over the last year, 200 accidents have occurred at the factory. Some of these can be attributed at least in part to unsafe working environments, whereas the others are unrelated to working environments. The accompanying table gives the percentage of accidents falling in each type of accident–shift category.

Unsafe Environment Unrelated to Environment

Day 10% 30%

Swing 12% 21%

Night 5% 22%

Suppose one of the 200 accident reports is randomly selected from a file of report, and the shift and type of accident are determined.

-------- Is the cause of the accident (unsafe environment vs unrelated) dependent or independent of the Work Shift? Use numbers to argue your case.

please don't copy the answer and explain !!!!

Answer 1