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Multiattribute acceptance sampling plans - Library(ISI Kolkata ...

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Table 3.1.3 : Testing goodness of fit of gamma distribution for the<br />

observed visual defects in lots containing about 25500 Eye drop vials<br />

each<br />

Number of<br />

defects /unit<br />

Observed Frequency<br />

( O i )<br />

Estimated Frequency<br />

( E i ) ( O i -E i ) 2 / E i<br />

0.08 6 4.5404 0.4692<br />

Totals 86 86 8.2054<br />

p<br />

2<br />

= 0.0230,<br />

Prob [<br />

χ<br />

2<br />

(9)<br />

><br />

Var(p )<br />

2<br />

8.205 ] = 0.513<br />

= 0.000852 ,<br />

s<br />

2<br />

=<br />

p .<br />

2<br />

2<br />

/<br />

/Var(p )<br />

2<br />

= 0.622<br />

133

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