Step-by-Step Solution

To solve for the probability $P(\text{senior})$, follow these steps:

1. Find the total number of students: The table shows the total is 100 students.
2. Find the total number of seniors: The table shows the total number of seniors is 35.
3. Calculate $P(\text{senior})$:

$P(\text{senior}) = \frac{\text{Number of seniors}}{\text{Total number of students}}$

$P(\text{senior}) = \frac{35}{100} = 0.35$

Final Answer:

$P(\text{senior}) = 0.35$

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Related Questions:

1. What is the probability a student is in sports, given they are a senior?
2. What is the probability that a randomly chosen student is in sports?
3. How would you calculate the probability of being in drama, given they are a junior?
4. What is the probability that a student is a sophomore?
5. Can you describe the relationship between conditional and unconditional probabilities?

Tip: When solving probability questions, always confirm whether the problem asks for a conditional or unconditional probability to avoid confusion.