Solve the problem.
-In a survey about the number of siblings of college students, the following probability table was constructed: $$\begin{array} { c | c }
\text { Number of Siblings } & \text { Probability } \
\hline 0 & 0.27 \
\hline 1 & 0.31 \
\hline 2 & 0.20 \
\hline 3 & 0.13 \
\hline 4 \text { or more } & 0.09
\end{array}$$ What is the probability that a student has at most 2 siblings?
A) 0.58
B) 0.42
C) 0.78
D) 0.22

Question

Solve the problem.
-In a survey about the number of siblings of college students, the following probability table was constructed: $$\begin{array} { c | c } 
\text { Number of Siblings } & \text { Probability } \
\hline 0 & 0.27 \
\hline 1 & 0.31 \
\hline 2 & 0.20 \
\hline 3 & 0.13 \
\hline 4 \text { or more } & 0.09
\end{array}$$ What is the probability that a student has at most 2 siblings?
A) 0.58
B) 0.42
C) 0.78
D) 0.22

Quizplus · Accepted Answer

The probability that a student has at most 2 siblings is the sum of the probabilities of having 0, 1, or 2 siblings: 0.27 + 0.31 + 0.20 = 0.78.

Solve the Problem What Is the Probability That a Student Has at Most