## Introduction

When two coins are tossed simultaneously, the possible outcomes can vary, leading to different domains. Let’s delve into what the domain means in this scenario and how it can be calculated.

## Basic Concept of Domain

In probability theory, the domain refers to the set of all possible outcomes of an experiment. For the case of two coins being tossed, the domain would consist of all possible combinations of heads and tails for each coin.

## Calculating the Domain

When two coins are tossed, there are four possible outcomes: HH (both heads), HT (heads-tails), TH (tails-heads), and TT (both tails). Therefore, the domain in this case would be {HH, HT, TH, TT}.

## Examples

- If you were to calculate the probability of getting at least one head when tossing two coins, the domain would be {HH, HT, TH} as these outcomes include at least one head.
- Similarly, if you wanted to find the probability of getting exactly one head, the domain would be {HT, TH} as these outcomes meet the specified criteria.

## Case Studies

In a study conducted on the probability of getting two heads when tossing two fair coins, researchers found that the domain for this scenario was {HH}. The experimental results showed that the probability of this outcome was 1/4, or 25%.

## Statistics

According to statistical analysis, the domain when two coins are tossed can be represented in a sample space of size 4, where each outcome has an equal probability of 1/4. This balanced distribution allows for the calculation of various probabilities based on specific conditions.

## Conclusion

The domain when two coins are tossed encompasses all possible outcomes that can occur, ranging from both heads to both tails. Understanding the concept of domain in this context is crucial for calculating probabilities and making informed decisions based on the outcome of the experiment.