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#1 Re: Help Me ! » I need help with this question experimental probability. » 2011-09-27 10:34:43

Thank you, that link you posted is very helpful. I will read up on it later since I'm tired. I just finished my math homework. Also I asked my teacher for help on the question I was having trouble with today, and she told me something similar to what you posted, but ill read up on the link to get a better understanding so when I see a similar question on a quiz,test or exam I will be able to answer it easily.


VC is short for Vince Carter he's a pro basketball player.

#2 Re: Help Me ! » I need help with this question experimental probability. » 2011-09-26 13:50:44

Should I elaborate on question a,b so you guys can get an example of what I did?

#3 Help Me ! » I need help with this question experimental probability. » 2011-09-26 13:44:00

VCFan1001
Replies: 4

Hi, I was assigned math homework today and I  finished it but left one question blank. I don't like to leave questions blank so that is why I am here asking for help. The question is

#7 At a light bulb factory, a batch of bulbs is rejected if more than 5% of the bulbs in a sample taken from the batch are defective.

a, If 240 bulbs are tested and 8 are defective, will the batch be rejected? Show your calculation

b, in a batch of 1000 bulbs, exactly 100 are defective. A sample of 200 bulbs from the batch of 1000 is tested. Do you expect the batch will be defective? Explain your reasoning.

c, In a large batch of bulbs, 1% of the bulbs are defective. A sample of bulbs is tested. Is it possible that the entire batch will be rejected? Explain your reasoning

I have already completed a,b and got the correct answer but how would I do c. For c I wrote: No the bulbs will not be rejected because only 1% are defective and 1% does not surpass 5% so the batch will be kept, but in the back of the textbook it says the bulbs will be rejected. Can someone tell me how the bulbs will be rejected? Basically I just made an assumption that they would not be rejected because all I was given was 1%. Would I need to find the number of bulbs that are being tested? How would I do that.

The formula for experimental probability is: p(event)=number of successful trials/total number of trials

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