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To solve the given problem, we need to determine the probability that a randomly selected adult from the total is male.

### Step 1: Extract the Data
The table provides the following information:

|                  | Republicans | Democrats | No Opinion | Total |
|------------------|-------------|-----------|------------|-------|
| **Male**         | 220         | 340       | 40         | ?     |
| **Female**       | 170         | 200       | 30         | ?     |
| **Total**        | ?           | ?         | ?          | 1000  |

- Sum up the values in each row to find the totals for each gender:
  - Total **males** = 220 + 340 + 40 = **600**
  - Total **females** = 170 + 200 + 30 = **400**

### Step 2: Calculate the Probability
- Total number of adults = 1000 (as mentioned in the problem).
- Number of males = 600.

The probability that a randomly selected adult is male is calculated as:

\[
\text{Probability (Male)} = \frac{\text{Number of Males}}{\text{Total Number of Adults}} = \frac{600}{1000} = 0.6
\]

So, the probability that the selected adult is male is **0.6** or **60%**.

Would you like more details or have any other questions?

### Related Questions
1. What is the probability that a randomly selected adult is female?
2. What is the probability that a randomly selected adult supports Democrats?
3. If an adult is randomly selected, what is the probability that this person has no opinion?
4. How would the probability change if the total number of adults surveyed increased?
5. What is the probability of selecting a male who supports Republicans?

### Tip
Always double-check the totals when working with probability questions involving tables, as errors in adding up values can affect your final answer.

One thousand adults were asked whether Republicans or Democrats have better domestic economic policies. The table classifies the opinions by gender. What is the probability that a randomly selected adult is male?

Learn how to calculate the probability that a randomly selected adult from a survey is male, using a classification table of opinions on domestic economic policies. This problem covers key statistical concepts and basic probability calculations. Suitable for students in Grades 9-12.

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