 | | 06-15-2008, 12:10 PM |
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#11 |
| Master Fan
Joined: Jun 2007
Posts: 18,537
| Quote: | Is there anyone good in math? i have an exam tomorrow, and I'd call one of my friends but they don't get this exercise either
There are two machines, Machine X and Machine Y, and they both produce Keys. Machine X produces 60% of the keys and Machine Y produces 40%
2% of all the key's produces by Machine X can't be used and
0,9% of all the key's produced by Machine Y can't be used.
At the and of the day, the boss picks 5 keys randomly
- What's the chance they can all be used
- What's the chance only one of them can be used
- What's the chance one or more can be used
Please? I'd be grateful for the rest of my life because I can't fail this exam. | ok well if i've done my math correctly there's a 99.98% chance that they can all be used although I wouldn't quote me on that This is reallycomplicated and I think I might be doing something wrong. I can't figure it out. what Math course is this? I'll ask my step mom if she's here, She's a math major. __________________ he is good, so good
he treats your little girl like a real man should.
he makes promises he keeps, no he's never gonna leave
mama don't you worry about me
Carrie Underwood ♥ Mike Fisher |
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