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A cell phone company wants to predict the probability of a seventh grader in your city, City A, owning a cell phone. Records from another city, City B, indicate that of seventh graders own a cell phone.
a. Assuming the probability of a seventh grader owning a cell phone is similar for the two cities, estimate the probability that a randomly selected seventh grader from City A owns a cell phone.
b. According to the data, which of the following is more likely?
a seventh-grade male owning a cell phone
a seventh grader owning a cell phone Explain your choice.
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