## anonymous one year ago The thickness of photoresist applied to wafers in semiconductor manufacturing at a particular on the wafer is uniformly distributed between 0.2035 and 0.2161 micrometers. a) Determine the proportion of wafers that exceeds 0.2125 micrometers of photoresist thickness

1. perl

Did you try to use a uniform distribution for this problem?

2. anonymous

i tried this, $f(x)=\frac{ 1 }{ (0.2161-0.2035 )}$ $f(x)=\frac{ 5000 }{ 63 }$ but i don't know the limits for the integral and i'm not sure if this is correct

3. perl

the limit is from .2125 to the end of the domain .2161

4. anonymous

$\int\limits_{0.2125}^{0.2161}\frac{ 5000 }{ 63 }$ the answer is 0.2857

5. perl

that's right

6. anonymous

Yes! Thank you so much! :)