Math Problem Statement
Solution
This problem involves a uniform distribution of a random variable over the interval .
Key Information:
- The random variable is uniformly distributed over , meaning the probability density function (PDF) is constant on this interval.
- The total probability over the entire interval is 1, so the height of the PDF is given by:
Problem Statement:
We are asked to find the probability that falls between 0.7 and 1.66.
For a uniform distribution, the probability of being between two values and is the length of that interval multiplied by the height of the PDF :
Solution:
- The length of the interval between 0.7 and 1.66 is:
- The height of the PDF is .
Thus, the probability is:
Therefore, the probability that a randomly selected is between 0.7 and 1.66 is 0.48.
Would you like any further clarification or details on this? Here are some related questions you might find useful:
- How do you calculate the probability for a uniform distribution over a different interval?
- What is the significance of the area under the probability density function (PDF)?
- How would this problem change if the distribution were not uniform?
- What is the cumulative distribution function (CDF) for a uniform distribution?
- How does the probability change if the interval of is expanded?
Tip: For uniform distributions, the probability is proportional to the length of the interval, making it simple to compute as the area of a rectangle.
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Math Problem Analysis
Mathematical Concepts
Probability
Uniform Distribution
Formulas
P(a ≤ X ≤ b) = (b - a) * f(x)
f(x) = 1 / (b - a) for a uniform distribution
Theorems
Uniform Distribution Theorem
Suitable Grade Level
Grades 11-12 or early college level
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