To compute the probability that a randomly chosen voter from the survey is between 39 and 49 years old and is registered as a Democrat, we can use the following steps:

1. Identify the total number of voters:
   The total number of registered voters in the survey is 3,228.

2. Identify the number of voters between 39 and 49 who are Democrats:
   From the table, the number of voters in the age group 39–49 who are Democrats is 251.

3. Calculate the probability:
   The probability $P$ that a randomly chosen voter is between 39 and 49 years old and is a Democrat can be calculated using the formula:

   $P(\text{39-49 and Democrat}) = \frac{\text{Number of 39-49 Democrats}}{\text{Total number of voters}}$

   Plugging in the numbers:

   $P(\text{39-49 and Democrat}) = \frac{251}{3228}$

   Now, we calculate this fraction:

   $P(\text{39-49 and Democrat}) \approx 0.0777$

   Rounding this to the nearest hundredth gives:

   $P \approx 0.08$

Thus, the probability that a randomly chosen voter is between 39 and 49 years old and is registered as a Democrat is approximately 0.08.

Do you want details or have any questions?

Here are some related questions you might consider:

1. What is the probability that a randomly chosen voter is registered as a Republican?
2. How many voters are there in total for each age group?
3. What is the proportion of Independents among the total voters?
4. What is the probability of selecting a voter who is either a Democrat or an Independent?
5. How do these probabilities change if we consider only the age group of 29-38?

Tip: When calculating probabilities, always make sure your total is correct to ensure accurate results.