main

prev        

Statement of a problem № m977

        next    

The Eckel Manufacturing Company believes that their hourly wages follow a normal probability distribution. To confirm this, 270 employees were sampled, organized into the following frequency distribution. Use the methods on pages 82–83 of Chapter 3 to find the mean and standard deviation of these data grouped into a frequency distribution. At the .10 significance level, is it reasonable to conclude that the distribution of hourly wages follows a normaldistribution?




New search. (Also 1294 free access solutions)