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2. Ten percent of the items produced by a machine are defective. A random sample of...

2. Ten percent of the items produced by a machine are defective. A random sample of 100 items is selected and checked for defects.

a. Determine the sampling error of the proportion.

b. What is the probability that the sample proportion will contain more than 13% defective units?

Formulas:

?=?−? ??̅= ? ?̅=? ??̅=√?(?−?) ? √? ? ?

Math   Statistics-And-Probability   
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