STEP - BY STEP EXPLANATION
What to find?
The probability to wait over two hours at the call center.
Given:
The probability to wait over two hours = P(x > 2)
[tex]P(x>2)=P(3)+P(4)[/tex]
From the table given;
P(3) = 0.1 and P(4) = 0.07
Substitute the values into the formula.
[tex]\begin{gathered} P(x>2)=0.1+0.07 \\ \\ =0.17 \end{gathered}[/tex]
ANSWER
0.17
