# statistics

The typical American generates about 3.8 pounds of solid trash per day with a standard deviation of 1.5 pounds. Assuming that the histogram for trash produced per day is aprox. bell shaped, between what two values will 95% of the observtion fall?

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1. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the Z score related to those proportions (±.25%). Put values in equation below.

Z = (score-mean)/SD

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