Question

In a class of students, the following data table summarizes how many students have a brother or a sister. What is the probability that a student chosen randomly from the class has a brother and a sister?

Answer 1

Answer:

Just making sure, it's been awhile

Step-by-step explanation:

3 / 29 = Probability with respect to the whole table.

9 / 40 = Probability with respect to the column and row.

Answer 2

The probability that a student chosen randomly from the class has a brother and a sister is 3/29

How to determine the probability?

From the table, we have the following values

• Number of students = 29
• Students that have a brother and a sister = 3

The probability is then calculated using:

P = Students that have a brother and a sister/Number of students

Substitute known values

P = 3/29

Hence, the probability that a student chosen randomly from the class has a brother and a sister is 3/29

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