Friday

August 22, 2014

August 22, 2014

Posted by **ophelia** on Thursday, March 24, 2011 at 1:09pm.

a. all three of the disks are defective

b. none of the three disks are defective

c. exactly one of the three disks is defective

d. at least one of the three disks works

- finite math -
**Reiny**, Thursday, March 24, 2011 at 1:22pmd - defective

g -good

a) prob(ddd) = (5/40)(4/39)(3/38) = ....

b) prob(ggg) = (35/40)(34/39)(33/38) = ....

c) prob(dgg) + prob(gdg) + prob(ggd) = 3(5/40)(35/39)(34/38) = ...

d) 1 - prob(ddd) = 1 - (35/40)(34/39)(33/38)

**Related Questions**

Math Finite - A box contains 15 pens of which 4 are defective. A random sample ...

statistics - A manufacturer of computer disks has a historical defective rate of...

Statistics - A box contains 10 items, of which 3 are defective and 7 are non-...

math - Numbered disks are placed in a box and one disk is selected at random. ...

Statistics - A box contains 12 lights bulbs, of which 4 are defective. All bulbs...

Finite Math - A factory produces fuses, which are packaged in boxes of 26. Eight...

Probability again - A box contains 6 red balls, 4 blue balls, and 2 green balls...

maths - a box contains 20 fuses ,out of which ,5 are defective.if a sample of 3 ...

math-probability - A factory produces fuses, which are packaged in boxes of 17. ...

math - A box contains 4 tickets letter O, A, G, C. Two tickets will randomly be ...