Math Problem Statement

Calculate the modeled probability P(E) using the given information, assuming all outcomes are equally likely: n(S) = 30, n(E) = 5. The user initially input P(E) = 0.16, which was incorrect.

Solution

To calculate the probability P(E)P(E), we can use the basic formula for probability when all outcomes are equally likely:

P(E)=n(E)n(S)P(E) = \frac{n(E)}{n(S)}

Where:

  • n(E)n(E) is the number of favorable outcomes.
  • n(S)n(S) is the total number of possible outcomes.

From the problem, we are given:

  • n(E)=5n(E) = 5
  • n(S)=30n(S) = 30

Now, calculating P(E)P(E):

P(E)=530=160.1667P(E) = \frac{5}{30} = \frac{1}{6} \approx 0.1667

The correct probability is approximately 0.167, not 0.16.

Would you like more details or have any questions?

Here are some related questions:

  1. What is the formula for probability when outcomes are equally likely?
  2. How can we express a probability as a fraction and a decimal?
  3. Why is it important to distinguish between rounding and exact values in probability?
  4. What are some real-life examples where probabilities are used in decision-making?
  5. How does changing n(E)n(E) or n(S)n(S) affect the probability?

Tip: Always double-check your rounding rules, especially in probability problems!

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Math Problem Analysis

Mathematical Concepts

Probability

Formulas

P(E) = n(E) / n(S)

Theorems

Basic probability theorem

Suitable Grade Level

Grades 7-9