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The weights of adult males are normally distributed with a mean of 172 lb and a standard deviation of 29 lb
Q.Find the weight that divides the upper 2% of weights from the lower 98%

  • Statistics -

    Z = (score-mean)/SD

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion and it corresponding Z score. Use Z value to find score in the above equation.

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