Statistics

The production manager of MPS Audio Systems Inc. is concerned about the idle time of workers. In particular, he would like to know if there is a difference in the idle minutes for workers on the day shift and the evening shift. The information below is the number of idle minutes yesterday for the five day-shift workers and the six evening-shift workers.

 

Day Shift Evening Shift
  119     98  
  121     99  
  115     85  
  86     88  
  95     94  
        118  

 

State the decision rule. Use the .05 significance level.
H0 : Idle minutes are the same.

H1 : Idle minutes are not the same. (Negative amount should be indicated by a minus sign. Round your answers to two decimal places.)

 
  Reject H0 if z < . There is  in the distribution of idle minutes.

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