Math Problem Statement

From the figure, what is P(X > 1.46) or P(X < 0.08) for a uniform distribution of a random variable X over [0, 2]?

Solution

The question in the image asks about probabilities based on the uniform distribution of a random variable XX over the interval [0, 2].

The uniform distribution over [0, 2] means that the probability density function (PDF) is constant across this interval. Specifically, the PDF is f(x)=12f(x) = \frac{1}{2} for 0x20 \leq x \leq 2.

Now let's solve each probability:

1. P(X>1.46)P(X > 1.46)

This is the probability that XX takes a value greater than 1.46. For a uniform distribution, this probability is simply the fraction of the remaining interval after 1.46:

P(X>1.46)=21.462=0.542=0.27P(X > 1.46) = \frac{2 - 1.46}{2} = \frac{0.54}{2} = 0.27

2. P(X<0.08)P(X < 0.08)

This is the probability that XX takes a value less than 0.08. Again, for a uniform distribution, this probability is proportional to the length of the interval from 0 to 0.08:

P(X<0.08)=0.0802=0.082=0.04P(X < 0.08) = \frac{0.08 - 0}{2} = \frac{0.08}{2} = 0.04

Therefore, the answers are:

  • P(X>1.46)=0.27P(X > 1.46) = 0.27
  • P(X<0.08)=0.04P(X < 0.08) = 0.04

Let me know if you'd like further details or explanations!

Related questions:

  1. How is the probability density function (PDF) defined for a uniform distribution?
  2. How do you calculate probabilities for other types of continuous distributions (e.g., normal distribution)?
  3. What is the difference between a cumulative distribution function (CDF) and a probability density function (PDF)?
  4. Can uniform distributions be defined on infinite intervals, or are they always finite?
  5. How do you find the mean and variance of a uniform distribution?

Tip: For uniform distributions, calculating probabilities always involves simple proportions of the interval length.

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Math Problem Analysis

Mathematical Concepts

Probability
Uniform Distribution

Formulas

P(X > a) = (b - a) / (b - a)
P(X < a) = (a - c) / (b - a)

Theorems

Uniform Distribution Probability

Suitable Grade Level

College level introductory statistics or probability course