Arcadia police believe that there is a relationship between the number of accidents in selected cities and days of the week. To test this claim, they randomly select a few cities from last week. The results are shown in the table below. At a level of significance of 1%, can we conclude using Chi Square Test that the number of accidents in selected cities are related to the select days of the week? a) State Ho, Ha (b) Critical value (c) T-Stat and (d) Interpret all your results. San Temple El Alhambra Arcadia Monrovia Pasadena Gabriel City Monte Monday 18 41 22 16 14 15 Friday 25 18 24 17 24 34

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Matrices

‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements are distributed horizontally in the form of rows, and vertically in the form of columns.