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March 2, 2015

March 2, 2015

Posted by **Mitch** on Thursday, February 24, 2011 at 3:11am.

explain how answer was arrived

- Statistics -
**drwls**, Thursday, February 24, 2011 at 6:49amP(7) = (0.92)^7*(0.08)^3*[10!/(7!*3!)]

= (10*9*8)/(1*2*3)]*(0.92)^7*(0.08)^3

= 0.03427

P(10)= 0.92^10 = 0.43439

P(9) = 0.92^9*0.08*10 = 0.37777

P(8) = 0.92^8*0.08^2*(10*9/2)=0.14781

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