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## Homework Statement

The distribution of a drugs among addicts with autoimmune disorder is N(6.9, 16.81). What is the probability that one of these addicts enters your office and reports taking 16 drugs or more?

## The Attempt at a Solution

z = (16-6.9)/4.1 = 2.21

P(z >16) = 0.014 from the table

so P(z > 16) = 0.014 or 1.4%

Is this correct. It seems to simple and maybe I dont understand the concept