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1 2 3 4 5 6 =7 8 =9 = 10 = 11 Smartphones: A poll agency reports that 47% of teenagers aged 12-17 own

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1 2 3 4 5 6 =7 8 =9 = 10 = 11 Smartphones: A poll agency reports that 47% of teenagers aged 12-17 own smartphones. A random sample of 147 teenagers is drawn. Round your answers to at least four decimal places as needed. Part: 0 / 6 Part 1 of 6 (a) Find the mean J. The mean JA is X

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