A recent survey of local cell phone retailers showed that of all cell phones sold last? month, 64% had a? camera, 28% had a music player and? 22% had both. what is the probability that a cell phone sold last month had a camera or a music? player?
The probability of having a cell phone with either a camera
or a music player is simply the sum of their probabilities minus the
probability of having both.
P (camera or music player) = 64% + 28% - 22% = 70%
