A student is selected at random from a group of 400. The results are summarized in the two-way table below. Male Female total Business 150 130 280 Math 70 50 120 total 220 180 400 a) What is the probability a student selected at random is female and a business owner? Express as a percent rounded to 1 decimal b) What is the probability that a student selected at random is a math student or male? Express as a percent rounded to 1 decimal c) What is the probability that a student selected at random is female given that she is a business major? Express as a percent rounded to 1 decimal
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.
A student is selected at random from a group of 400. The results are summarized in the two-way table below.
| Male | Female | total | |
| Business | 150 | 130 | 280 |
| Math | 70 | 50 | 120 |
| total | 220 | 180 | 400 |
a) What is the
b) What is the probability that a student selected at random is a math student or male? Express as a percent rounded to 1 decimal
c) What is the probability that a student selected at random is female given that she is a business major? Express as a percent rounded to 1 decimal
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