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Maple tree diameter in a forest is normally distributed with a mean of 10 inches and...

  1. Maple tree diameter in a forest is normally distributed with a mean of 10 inches and a standard deviation of 2.2 inches. Which interval contain the middle 95%
    A. (7.8,12.2)
    B. (3.4,16.6)

    C. (5.6,14.4) D. (7.8,14.4)

Math   Statistics-And-Probability   
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