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September 23, 2014

September 23, 2014

Posted by **josh** on Saturday, June 28, 2014 at 1:31am.

- statistics -
**MathMate**, Saturday, June 28, 2014 at 8:42amGiven:

μ=0.5"

σ=0.01"

Rejection rate = 0.8% = 0.008

rejection criterion = z<Z

X=μ+Zσ

=0.5+0.01Z

From normal distribution tables

P(Z<-2.409)=0.008

so

X=0.5-0.01*2.409

=0.4758

Ans: washers with diameters less than 0.476 are rejected.

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