Question

In: Statistics and Probability

The following are the weekly losses of work-hours due to accidents in 10 industrial plants before...

  • The following are the weekly losses of work-hours due to accidents in 10 industrial plants before and after a certain safety program were put into operation

Before

45

73

46

124

33

57

83

34

26

17

After

36

60

44

119

35

51

77

29

24

11
  1. Is the assumption that the difference in weekly losses of work-hours is normally distributed reasonable?
  2. Test whether the safety program is effective. Use α=0.05.

Find a 95% confidence interval on the difference in mean weekly losses of work-hours

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orchestra answered 2 years ago
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