# How to Solve Probability Word Problems

So people are Bayesians who fail to solve simple Bayesian word problems. As with most paradoxes, a solution to this “Bayesian paradox” lies in taking closer look at conceptualizations: at what constitutes a Bayesian inference in these two strands of research. Such analysis uncovers important design differences, Bayesian classification criteria and statistical approaches (Vallée-Tourangeau et al., ). However, the crucial difference that we highlight here lies in the cognitive processes involved in performing the task. What is described as a “Bayesian inference” in the two strands conflates very different processes. *Implicit processes*—implicit calculations with probabilities mostly acquired from experience—are involved in the Bayesian computations approximating the performance of various cognitive functions and in the estimation of experienced real-life outcomes. *Explicit processes*—explicit calculations with probabilities typically extracted from a textual description—are involved in solving Bayesian textbook problems or social judgment problems. The different information source, experience or description, for example, has been shown to lead to dramatically different choices and decisions (e.g., Hertwig et al., ). With this distinction, of course, we do not intend to imply that all the cognitive processes involved in estimating probabilities are necessarily implicit and engage only with the probabilities from experience or vice versa. Rather we wish to point out that the different experimental paradigms outlined here require typically different cognitive processes operating over different types of information.

## How to Solve a probability math word problem « Math :: WonderHowTo

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### May 20, 2008 - How to Solve a probability math word problem

The first step to solve word problems is to read and understand what information the question holds and solve the problem by using appropriate method. Lets see with the help of examples how to solve the probability word problems.

### Solve Probability Word Problems « Wonder How To

In this lesson you will learn how to solve a probability word problem. Double-click the play button to start the video.

Without looking, Tom draws a marble from a bag containing 12 marbles. There are 3 red marbles, 4 blue marbles, and 5 green marbles. What is the probability that he will draw a blue marble?

When solving probability problems, remember this important formula:

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This math video tutorial explains how to solve probability word problems using marbles as examples. It provides a basic review of calculating probability for independent events. It goes over the rules of compound events focusing on key expressions such as and/or. "And" is associated with multiplication while "or" is associated with addition. This video contains plenty of examples and practice problems of calculating probability with replacement and without replacement.