Question

question
for a certain class, the following data table compares how many students have a brother or a sister. what is the probability that a randomly chosen student from the class does not have a brother?

	has a sister	does not have a sister
does not have a brother	4	12

you only have 3 questions left to raise your score.

Explanation:

Step1: Calculate total students

First, sum all the values in the table. For "Has a brother": $2 + 11 = 13$. For "Does not have a brother": $4 + 12 = 16$. Total students = $13 + 16 = 29$.

Step2: Find students without a brother

From the table, "Does not have a brother" row has $4 + 12 = 16$ students.

Step3: Compute the probability

Probability = $\frac{\text{Students without a brother}}{\text{Total students}} = \frac{16}{29}$.

Answer:

$\frac{16}{29}$