Find the Indicated Probability by Using the Special Addition Rule

Multiple Choice

Find the indicated probability by using the special addition rule.
-A relative frequency distribution is given below for the size of families in one U.S. city.
$\begin{array} { l c } \text { Size } & \text { Relative frequency } \\\hline 2 & 0.416 \\3 & 0.217 \\4 & 0.210 \\5 & 0.102 \\6 & 0.040 \\7 + & 0.015\end{array}$
A family is selected at random. Find the probability that the size of the family is between 2 and 5 inclusive. Round approximations to three decimal places.

A) 0.843
B) 0.945
C) 0.518
D) 0.427