Using Conditional Probability and Independence: Tutorial

The probabilities that new cars of different makes will have a malfunctioning air conditioner are given in the table.

\begin{tabular}{|c|c|}
\hline
Car Make & Malfunctioning Air Conditioner in New Car \\
\hline
A & [tex]$0.0065 \%$[/tex] \\
\hline
B & [tex]$0.0037 \%$[/tex] \\
\hline
C & [tex]$0.0108 \%$[/tex] \\
\hline
D & [tex]$0.0029 \%$[/tex] \\
\hline
E & [tex]$0.0145 \%$[/tex] \\
\hline
Total & [tex]$0.0048 \%$[/tex] \\
\hline
\end{tabular}

What is the chance that a given car will have a malfunctioning air conditioner, given that it is of make [tex]$C$[/tex]?

Type your response in the space provided.



Answer :

To find the probability that a given car will have a malfunctioning air conditioner, given that it is of make C, we are looking for the conditional probability [tex]\( P(\text{Malfunctioning Air Conditioner} | \text{Make C}) \)[/tex].

From the provided table, we know the probabilities of a new car having a malfunctioning air conditioner for each specific make. The relevant figure from the table for make C is:
[tex]\[ P(\text{Malfunctioning Air Conditioner} | \text{Make C}) = 0.0108\% \][/tex]

Thus, the chance that a car will have a malfunctioning air conditioner, given that it is make C, is:
[tex]\[ 0.0108\% \][/tex]

Therefore, the conditional probability is 0.0108%.