Two tutoring services offer crash courses in preparation for the CPA exam. To check on the effectiveness of these services, 15 students were chosen. Five students were randomly assigned to service A, 5 were assigned to service B, and the remaining 5 did not take a crash course. Their scores on the examination, expressed as percentages, are given in the table.Service A Course      Service B Course     No Course          79                             74                       72          74                             69                       71          92                             87                       81          67                             81                       61          85                             64                       63a. Prepare the analysis of variance table.b. Test the null hypothesis that the three population mean scores are the same.c. Compute the minimum significant difference and indicate which subgroups have different means.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.