Answered

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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 sister?
Has: brother Does not have a brother
Has a sister
6
12
Does not have a sister
3

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 F class=

Sagot :

The probability that a student chosen randomly from the class has a sister is 3/5.

What is the probability of an event?

The probability of an event is the fraction of the number of favorable occurrences of an event to the total occurrences of the event.

P(a) = n(a)/n(s)

where 'a' is an event.

Calculation:

The given data table shows how many students have a brother or a sister in a class of students.

The number of students who have both a sister and a brother = 6

The number of students who have only a brother and do not have a sister  = 3

The number of students who have only a sister and do not have a brother = 12

The number of students who do not have both a sister and a brother = 9

So, the total number of students in the class = 6 + 3 + 12 + 9 = 30

Then, the probability that a student chosen randomly from te class has a sister is

= (number of students who have a sister)/total number of students

= (6 + 12)/30

= 18/30

= 3/5

Learn more about the probability of an event here:

https://brainly.com/question/25870256

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