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A Relative Frequency Distribution Is Given Below for the Size

question 78

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A relative frequency distribution is given below for the size of families in one U.S. city.
 Size  Relative frequency 20.45830.20540.19950.08660.0347+0.018\begin{array} { l c } \text { Size } & \text { Relative frequency } \\\hline 2 & 0.458 \\3 & 0.205 \\4 & 0.199 \\5 & 0.086 \\6 & 0.034 \\7 + & 0.018\end{array}
A family is selected at random. Find the probability that the size of the family is at most 6. Round approximations to three decimal places.


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