Respondents of three different age groups took part in the survey about technology use. They were categorized into three groups depending on whether they have a basic cell phone, a smartphone, or they do not have a cell phone at all. Cell phone, smartphone Cell phone, not smartphone No cell phone 30-49 2,583 326 35 50-64 1,625 503 75 65+ 632 580 304 Round your answers to two decimal places. a. What is the probability that a randomly selected person from the sample is younger than 50? b. What is the probability that a randomly selected person from the sample uses a smartphone? c. What is the probability that a randomly selected person from the sample is younger than 50 and does not use a smartphone?

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