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The Homework Thread #6 ~ Need a Little Help? Ask Here.
Please post all homework-related questions on this thread. This thread is for getting help when get stuck with researching for an essay, solving a math problem, finding the capital of a country...etc. Basically, the thread is for questions where you are only looking for the right answer or a few responses at the most. If you are looking for a wide variety of input, such as getting as many responses as possible for a survey or asking for general ideas for starting a project, you are welcome to start a new thread on it. From the previous thread: Quote:
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ღ Carol |
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Lemurian, thanks so much for answering my question on the previous thread!
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Ju |
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SilviahPaulian : Yes, it is french :
"le petit déjeuner" = breakfast "fenêtre" = window "clé" = key This is the translation __________________
9 Bunny N° 181 Thanks kate, SOD : I love Ron... he's so boring... ~ RP + VL ~ |
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Quote:
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9 Bunny N° 181 Thanks kate, SOD : I love Ron... he's so boring... ~ RP + VL ~ |
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LOL!!! French is pretty hard!
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Adam Lambert and Allison Iraheta .Shelly. Icon: CharlieandClaire |
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Quote:
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9 Bunny N° 181 Thanks kate, SOD : I love Ron... he's so boring... ~ RP + VL ~ |
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Joined: Apr 2007
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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. __________________
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Joined: Mar 2008
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I have to do some hw soon.
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ღBarney&Robinღ"Robin Scherbatsky, I love you so damn much." |
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Quote:
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"I'd lose an award to her any day" ~ Carrie eoty♥fvotyMiranda ~ "She told me 'long time coming'" |
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Quote:
- 2% of 60% is (2/100)x(60/100)=120/10000=1,2% - 0,9% of 40% is (0,9/100)x(40/100)=36/10000=0,36% so in total the (1,2%+0,36%)=1,56% of the keys can't be used. - What's the chance they can all be used? The joint probability of a series of events is P=P(E1) x P(E2)...x P(En) In this case on 5 events the probability is (100% - 1,56%) x (100% - 1,56%) x (100% - 1,56%) x (100% - 1,56%) x (100% - 1,56%) = 92,44% - What's the chance only one of them can be used? It's the joint probability of "one can be used" and "4 can't be used" so: (100% - 1,56%) x 1,56% x 1,56% x 1,56% x 1,56% => (5,83 e-8 )^5 - What's the chance one or more can be used? It's 100% -the chanche that all of them can't be used so: 100%- [(1,56%)x(1,56%)x(1,56%)x(1,56%)x(1,56%)]=100% - 9,239e-10= almost 1... Thank you anyway __________________
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Master Fan
Joined: Jun 2007
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ha ok see me and my friend were doing it way different but i get it. Thank god i dont have to take math anymore.
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"I'd lose an award to her any day" ~ Carrie eoty♥fvotyMiranda ~ "She told me 'long time coming'" |
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Joined: Apr 2007
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i have it 6 hours a week and unfortunately no choice to drop it
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Joined: Nov 2007
Posts: 1,785
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Quote:
Not a fan of math. __________________
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