The Pew Research Center asked a random sample of 2024 adult cell-phone owners from the United States their age and which type of cell phone they own: iPhone, Android, or other (including non-smartphones). The two-way table summarizes the data. Suppose we select one of the survey respondents at random. Type of cell phone Age 18-34 35-54 55+ Total 171 127 467 iPhone 169 Android 214 189 100 503 Other 134 277 643 1054 Total 517 637 870 2024 What is the probability that the person is not age 18 to 34 and does not own an iPhone? = 0.776 = 0.597 189+100+277+643 503+1054 189+100+277+643 2024 214+134 2024 = 0.172 214+134 = 0.673 517 189+100+277+643 637+870 = 0.802

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