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Posted by on Wednesday, November 16, 2011 at 3:30pm.

a machine fills containers with a standard deviation of filling weights of 1.5. calculate the mean weight if only 4 % of the containers hold less than 19 ouncesĀ 

  • Statistics - , Thursday, November 17, 2011 at 1:01pm

    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 its Z score. Insert the Z score and the other values in the above equation and solve for the mean.

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