In Example, we developed the following crosstabulation of sales transaction data: Region Book DVD Total East 56 42 98 North 43 42 85 South 62 37 99 West 100 90 190 Total 261 211 472 a) An auditor randomly checks 1% sales transaction data of the firm (La, 5 transaction data) whose summary information is given in the above table, what is the probability she/he will examine all transactions generated from East region only? b) Given that the auditor is only interested to audit DVD sales, how likely will he examine transactions generated from North and South regions only? C) Is the sales of DVD independent of region? Justify you claim with appropriate statistical analysis