Math Problem Statement

Use the probability distribution table to find the specified probabilities: - P(x < 2) - P(x ≤ 2) - P(x > 1) - P(x ≥ 1)

Solution

Let's solve the probabilities based on the given probability distribution table. Here is the table and the probabilities to find:

xxP(x)P(x)
00.24
10.28
20.03
30.37
40.08

Calculations

  1. P(x<2)P(x < 2):

    • This represents P(x=0)+P(x=1)P(x = 0) + P(x = 1).
    • P(x<2)=0.24+0.28=0.52P(x < 2) = 0.24 + 0.28 = 0.52.
  2. P(x2)P(x \leq 2):

    • This represents P(x=0)+P(x=1)+P(x=2)P(x = 0) + P(x = 1) + P(x = 2).
    • P(x2)=0.24+0.28+0.03=0.55P(x \leq 2) = 0.24 + 0.28 + 0.03 = 0.55.
  3. P(x>1)P(x > 1):

    • This represents P(x=2)+P(x=3)+P(x=4)P(x = 2) + P(x = 3) + P(x = 4).
    • P(x>1)=0.03+0.37+0.08=0.48P(x > 1) = 0.03 + 0.37 + 0.08 = 0.48.
  4. P(x1)P(x \geq 1):

    • This represents P(x=1)+P(x=2)+P(x=3)+P(x=4)P(x = 1) + P(x = 2) + P(x = 3) + P(x = 4).
    • P(x1)=0.28+0.03+0.37+0.08=0.76P(x \geq 1) = 0.28 + 0.03 + 0.37 + 0.08 = 0.76.

Summary of Answers:

  • P(x<2)=0.52P(x < 2) = 0.52
  • P(x2)=0.55P(x \leq 2) = 0.55
  • P(x>1)=0.48P(x > 1) = 0.48
  • P(x1)=0.76P(x \geq 1) = 0.76

Would you like more details on any of these calculations?

Here are five related questions you might find helpful:

  1. What is the probability that x=3x = 3?
  2. How can we verify that this is a valid probability distribution?
  3. What is the probability of xx being either 0 or 4?
  4. What is the expected value of xx in this distribution?
  5. How would the probabilities change if P(x=4)P(x = 4) increased?

Tip: To ensure it's a valid probability distribution, the sum of all probabilities should equal 1.

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Math Problem Analysis

Mathematical Concepts

Probability Distribution
Discrete Random Variables

Formulas

P(x < a) = sum of P(x) for all x < a
P(x ≤ a) = sum of P(x) for all x ≤ a
P(x > a) = sum of P(x) for all x > a
P(x ≥ a) = sum of P(x) for all x ≥ a

Theorems

Law of Total Probability

Suitable Grade Level

Grades 10-12