From a poll of 800 television viewers, the following data have been accumulated as to their levels of education and their preference of television stations. We are interested in determining if the selection of a TV station is independent of the level of education.                                                     Educational Level                                        High School      Bachelor       Graduate Public Broadcasting            50                      150                  80 Commercial Stations          150                     250                120 a. The null hypothesis is to be tested at 95% confidence. Determine the critical value for this test. What do you conclude?

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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.