Question

If event A has a probability of \( 0.5 \) and event B has a probability of \( 0.3 \), what is the probability that both events occur?

Ask by Welch Ramirez. in South Africa
Feb 03,2025

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Tutor-Verified Answer

Answer

The probability that both events A and B occur is 0.15, assuming they are independent.

Solution

To determine the probability that both events \( A \) and \( B \) occur, we need to know whether the events are **independent** or **dependent**. 1. **Independent Events:** - **Definition:** Two events are independent if the occurrence of one does not affect the probability of the other. - **Calculation:** If \( A \) and \( B \) are independent, the probability that both occur is the product of their individual probabilities. \[ P(A \text{ and } B) = P(A) \times P(B) = 0.5 \times 0.3 = 0.15 \] 2. **Dependent Events:** - **Definition:** Two events are dependent if the occurrence of one affects the probability of the other. - **Calculation:** In this case, additional information about how \( A \) and \( B \) are related is needed to determine \( P(A \text{ and } B) \). **Conclusion:** - **If \( A \) and \( B \) are independent**, the probability that both events occur is **0.15**. - **If they are not independent**, more information is required to calculate the probability. **Assuming independence, the probability that both events occur is 0.15.**

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Beyond the Answer

To find the probability that both events A and B occur, you multiply their probabilities together. Assuming events A and B are independent, the calculation is: \[ P(A \cap B) = P(A) \times P(B) = 0.5 \times 0.3 = 0.15 \] So, the probability that both events A and B occur is \( 0.15 \) or \( 15\% \). But hold on! If A and B are not independent, you'll need additional information about their relationship, which could change the outcome. Be sure to check if there’s any overlap or dependence between the events that could affect your calculations!

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