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Records of minor work-related accidents

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The safety director of large steel mill took samples at random from company records of minor work-related accidents and classified them according to the time the accident took place.

Time     Number of Accidents   Time Number of Accidents

8 up to 9 a.m.   4     1 up to 2 p.m.   11  

9 up to 10 a.m.   9     2 up to 3 p.m.   12  

10 up to 11 a.m.   12     3 up to 4 p.m.   7  

11 up to 12 p.m.   8     4 up to 5 p.m.   10  

Using the goodness-of-fit test and the 0.10 level of significance, determine whether the accidents are evenly distributed throughout the day.

H0: The accidents are evenly distributed throughout the day.  

H1: The accidents are not evenly distributed throughout the day. 

a. State the decision rule, using the 0.10 significance level

Reject H0 if chi-square >_____

b. Compute the value of chi-square

Chi-square value_____

Reference no: EM132188218

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