document.write( "Question 724477: A hospital conducted a study of the waiting time in its \n" );
document.write( "emergency room. The hospital has a main campus and three \n" );
document.write( "satellite locations. Management had a business objective of \n" );
document.write( "reducing waiting time for emergency room cases that did not \n" );
document.write( "require immediate attention. To study this, a random sample \n" );
document.write( "of 15 emergency room cases at each location were selected on \n" );
document.write( "a particular day, and the waiting time (measured from checkin \n" );
document.write( "to when the patient was called into the clinic area) was \n" );
document.write( "measured. The results are stored in the file . \n" );
document.write( "a. At the 0.05 level of significance, is there evidence of a \n" );
document.write( "difference in the mean waiting times in the four locations \n" );
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