A random sample of 100 people were asked if their finances were worse, the same or better than this time last year. The sample was split according to their annual income and the results are shown in the table below.
Annual income Worse Same Better
Under £ 15000 14 11 9
£ 15000 and above 17 20 29
Test, at the 5% level of significance, whether or not the relative state of their finances is independent of their income range. State your hypotheses and show your working clearly.
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Please see the answers
H0: There is no association between income and finacial status .
H1: There is association between income and finacial status .
The test statistic used is Chi sqaure test.
Where E is the expected freequcny and O is the Expected freequency ...
The solution provides step by step method for the calculation of chi square test for association. Formula for the calculation and Interpretations of the results are also included. Interactive excel sheet is included. The user can edit the inputs and obtain the complete results for a new set of data.