Monday

January 26, 2015

January 26, 2015

Posted by **Anonymous** on Sunday, July 22, 2012 at 10:48pm.

- probability -
**Reiny**, Sunday, July 22, 2012 at 11:51pmprob of defect = .1

prob of NOT defect = .9

4 or more defective means

exclude cases of 0, 1, 2, or 3 defective

prob of none defective = C(15,0) (.1^0)( .9^15) = .20589

prob of one defective = C(15,1) (.1)^1 (.9)^14 =.34315

prob of two defective = C(15,2) (.1^2)(.9^13) = .266896

prob of three defective = C(15,3) (.1^3)(.9^12) = .128505

So prob of 4 or more defective

= 1 - sum of the above cases

= .944444

prob of three defective = C(15,3) (.1^12)(.9^3) =

**Answer this Question**

**Related Questions**

statistics - the j.o supplies company buys calculators from a supplier. The ...

Math - My question is to get a better understanding of this. Basically, these ...

statistics - A sample of 4 different calculators is randomly selected from a ...

Statistics - A sample of 4 different calculators is randomly selected from a ...

Statistics - 4 calculators were selected at random from a sample of 44 ...

math - In a shipment of 50 calculators,4 are defective. Two calculators are ...

statistics - a company manufactures calculators in batches of 45 and claims that...

Stats - Suppose that 8% of a certain batch of calculators have a defective case...

Stats - Suppose that 8% of a certain batch of calculators have a defective case...

Math - An electronic store receives a shipment of 30 graphing calculators, ...