Math Problem Statement

The outcomes of an experiment and the probability of each outcome are given in the table below. Compute the expectation for this experiment.

Solution

To compute the expectation (also known as the expected value) for the experiment described in the table, we can use the formula for expected value:

E(X)=(xipi)E(X) = \sum (x_i \cdot p_i)

Where:

  • xix_i is the outcome
  • pip_i is the probability of each outcome

The outcomes and probabilities provided are:

  • Outcome 5: Probability 0.5
  • Outcome 6: Probability 0.14
  • Outcome 7: Probability 0.2
  • Outcome 8: Probability 0.08
  • Outcome 9: Probability 0.06
  • Outcome 10: Probability 0.02

Let's compute the expectation:

E(X)=(50.5)+(60.14)+(70.2)+(80.08)+(90.06)+(100.02)E(X) = (5 \cdot 0.5) + (6 \cdot 0.14) + (7 \cdot 0.2) + (8 \cdot 0.08) + (9 \cdot 0.06) + (10 \cdot 0.02)

I'll calculate this now.The expected value for this experiment is E(X)=6.12E(X) = 6.12.

Would you like further details or have any questions?

Here are some related questions for deeper understanding:

  1. What does the expected value represent in a probability distribution?
  2. How would the expected value change if the probabilities were different?
  3. What is the difference between expected value and variance?
  4. How would you calculate the variance for this data set?
  5. What are some real-life applications of calculating expected value?

Tip: Expected value helps to determine the long-term average outcome of a random experiment, useful in decision-making processes.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Probability
Expected Value

Formulas

E(X) = Σ (x_i * p_i)
Expected Value Formula

Theorems

Law of Large Numbers

Suitable Grade Level

Grades 9-12