Use the data given in the table below to compute the probability that a randomly chosen voter from the survey will satisfy the following. Round to the nearest hundredth. The voter is between 39 and 49 and is registered as a Democrat. Age Republican Democrat Independent Other Total 18–28 205 432 98 112 847 29–38 311 301 109 83 804 39–49 250 251 150 122 773 ≥50 272 283 142 107 804 Total 1038 1267 499 424 3228
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.
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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.
| Age | Republican | Democrat | Independent | Other | Total |
|---|---|---|---|---|---|
| 18–28 | 205 | 432 | 98 | 112 | 847 |
| 29–38 | 311 | 301 | 109 | 83 | 804 |
| 39–49 | 250 | 251 | 150 | 122 | 773 |
| ≥50 | 272 | 283 | 142 | 107 | 804 |
| Total | 1038 | 1267 | 499 | 424 | 3228 |
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