solution

 

. Refer to the previous exercise. Two corporations that were not included in the simple random sample are the School System of Hammond and the Northwest Indiana Special Education Cooperative. Hammond is a very large corporation with 137 thousand students and 83 million dollars in expenditures. On the other hand, Northwest Indiana is listed as having 39 students (which would be rounded to 0 thousand students) and expenditures of 13.9 million dollars. We assume that this school corporation provides services to students with special education needs within the state. Reanalyzethe data from the previous exercise with each of these corporations added to the data set (31 observations) and with both added (32 observations). Use graphical and numerical summaries to describe how the results and inferences change for these altered data sets.