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A cell phone company want to predict the prabablity of a seventh grader in your city, city a owing a cell phone records from another city ,city b indicate the 201 of 1000 seventh grades own a cell phone.Assuming the probability of a seventh grade 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. *

User Owusu
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23 votes
23 votes

\begin{gathered} \text{ the probability is } \\ P=(201)/(1000) \\ P=0.201 \\ \\ \text{ The probability is 0.201} \end{gathered}
\begin{gathered} \text{remember that to find out the probability, we do } \\ P=\frac{\text{possible cases}}{\text{total cases}}\text{ } \\ \\ \text{out of the total cases of 1000 seventh grades students, 201 are the ones that have the cellphone, that is} \\ \text{ the 201 possible cases} \end{gathered}

User The Blue Dog
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