Calculating Probability for X from f(x;θ) with θ > 0

In summary, probability is a measure of the likelihood of an event occurring, expressed as a number between 0 and 1. It can be calculated by dividing the number of favorable outcomes by the total number of possible outcomes. Theoretical and experimental probability differ in their approach and assumptions. Probability and statistics are closely related, with probability being used to make predictions and draw conclusions in statistical analysis. In real life, probability is used in various fields such as gambling, insurance, weather forecasting, and decision-making processes.
  • #1
safina
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Let X be a single observation from the density [tex]f\left(x;\theta\right) = \theta x^{\theta -1}I_{(0,1)} (x)[/tex], where [tex]\theta > 0[/tex]. What is the [tex]P\left[X \geq \frac{1}{2} |\theta > 1|\right][/tex]?

Please help me structure the solution of this problem
 
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  • #2
safina said:
Let X be a single observation from the density [tex]f\left(x;\theta\right) = \theta x^{\theta -1}I_{(0,1)} (x)[/tex], where [tex]\theta > 0[/tex]. What is the [tex]P\left[X \geq \frac{1}{2} |\theta > 1|\right][/tex]?

Please help me structure the solution of this problem

What do you mean by

[tex]
P\Big(X \ge \frac 1 2 |\theta > 1 |\Big)
[/tex]
 

What is the definition of probability?

Probability is a measure of the likelihood or chance that a specific event will occur. It is expressed as a number between 0 and 1, where 0 represents impossibility and 1 represents certainty.

How is probability calculated?

Probability is calculated by dividing the number of favorable outcomes by the total number of possible outcomes. This is known as the classical probability formula. Other methods of calculating probability include empirical and subjective approaches.

What is the difference between theoretical and experimental probability?

Theoretical probability is based on mathematical calculations and assumes that all outcomes are equally likely. Experimental probability is based on the results of actual experiments or observations. It may differ from theoretical probability due to chance or other factors.

What is the relationship between probability and statistics?

Probability is a branch of mathematics that deals with the likelihood of events. Statistics is the study of collecting, analyzing, and interpreting data. Probability is used in statistics to make predictions and draw conclusions about a population based on a sample.

How is probability used in real life?

Probability is used in many real-life situations, such as in gambling, insurance, weather forecasting, and scientific research. It is also used in decision-making processes, such as in business and economics, to assess risks and make informed choices.

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