Question: In an example in, we developed the following cross tabulation of sales transaction data: a. Find the marginal probabilities that a sale originated in each

In an example in, we developed the following cross tabulation of sales transaction data:

a. Find the marginal probabilities that a sale originated in each of the four regions and the marginal probability of each type of sale (book or DVD).
b. Find the conditional probabilities of selling a book given that the customer resides in each region. "

Total DVD 42 42 37 90 Book Region East North South West 43 62 100 190 261 211 472 Total

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