Recent content by Orikon

so, kc = a + nc a = kc - nc a = c(k-n) which means c must also be divisible by a when c is divisible by b. That's the contrapositive of the original statement, so it must be true, right? :biggrin: Thank you so much!

Thanks for the help. I think there's a problem though, shouldn't C = (a+b)n for some integer n? Instead of c= a + cn, it should be c divides a + cn. I tried the following c = (a +cn)k where k is another integer, so a = (c/k) - cn but I can't figure out where to go from there. Thanks

I'm having trouble with this question, I need to prove or disprove this statement: If c divides (a+b), but c does not divide a, then c does not divide b. what i have so far is ck = (a+b) where k is some integer. Next I have a=ck-b and b=ck-a. I tried doing things like a = ck-(ck-a) but...

I need help with this problem, so far I've only been using trial and error but I'm getting nowhere, and can't think of any other way to figure this out. Anyway, the problem is to find a four-variable logic function whose minimal sum-of-products realization is not hazard free, but for which...

I've been at this for a while now and I'm getting nowhere. The problem is to prove that a two level AND-OR (sum of products) circuit corresponding to the complete sum of a logic function is always hazard free (static hazard). I can't even figure out where to begin with this, any help would be...

Actually, according to my handy table here, 1.645 is for a 95% one-sided confidence; 1.96 is used for two sided 95% confidence (corresponds to 97.5%). Anyways, thanks a lot, I can't believe I spent so much time on that lol. As for the cutoff level , what do you think they mean by that? I...

ah ok, that would be 0.2, which is the margin of error right? then i can solve the equation for the sampe size...I got a value of 11 using a one tailed test. does that sound right to you, or do you think this is a two tailed. Many thanks :) by the way, I am still not sure how i would find...

sure, An engineer wants to test the hypothesis that the true average voltage threshold V of a diode is 6.2 Volts as labeled. He will accept the null hypothesis with 95% confidence if the true average voltage is indeed 6.2 Volts, and will reject the null hypothesis with 95% confidence if the...

This is a statistics and probability question. I've been trying to figure this out for hours but I'm getting nowhere: I have to test the hypothesis that the true average value of a sample is 6.2. I will reject the null hypothesis if with 95% confidence if the true average value is indeed 6.2...

I always do questions on school that ask for a test of hypothesis where the sample data is already give, but what if you want to do it the other way around, by first figuring out what sample size is needed to test a hypothesis at a given accuracy. Is that possible?

I'm not sure if this has been asked before, I searched the forum but didn't find anything. Anyway, I was wondering what minimum velocity the moon can have without crashing into the Earth due to gravity (basically the opposite of the escape velocity).