A cross-tabulation of sales transactions data is shown to the right. Use the data to complete parts a Region and b below. Вok DVD Total East 57 47 104 North 48 47 95 South 62 31 93 West 101 94 195 Total 268 219 487 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). The marginal probability for the eastern region is The marginal probability for the northern region is The marginal probability for the southern region is The marginal probability for the western region is The marginal probability for book sales is The marginal probability for DVD sales is (Round to three decimal places as needed.)

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Compound Probability

Compound probability can be defined as the probability of the two events which are independent. It can be defined as the multiplication of the probability of two events that are not dependent. 

Tree diagram

Probability theory is a branch of mathematics that deals with the subject of probability. Although there are many different concepts of probability, probability theory expresses the definition mathematically through a series of axioms. Usually, these axioms express probability in terms of a probability space, which assigns a measure with values ranging from 0 to 1 to a set of outcomes known as the sample space. An event is a subset of these outcomes that is described. 

Conditional Probability

By definition, the term probability is expressed as a part of mathematics where the chance of an event that may either occur or not is evaluated and expressed in numerical terms. The range of the value within which probability can be expressed is between 0 and 1. The higher the chance of an event occurring, the closer is its value to be 1. If the probability of an event is 1, it means that the event will happen under all considered circumstances. Similarly, if the probability is exactly 0, then no matter the situation, the event will never occur.