A "handoff" is a term used in wireless communications to describe the process of a cell phone moving from the coverage area of one base station to that of another. Each base station has multiple channels (called color codes) that allow it to communicate with the cell phone. A certain engineering magazine published a study of cell phone handoff behavior. During a sample driving trip that involved crossing from one base station to another, the different color codes accessed by the cell phone were monitored and recorded. The table below shows the number of times each color code was accessed for two identical driving trips, each using a different cell phone model. Suppose you randomly select one point during the combined driving trips. Complete parts a through c. a. What is the probability that the cell phone was using color code c? The probability is \( \square \). (Round to three decimal places as needed.)
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