Recent content by chever

That clarifies matters a bit. Thank you.

I have read that the statistic computed for the unpaired two sample t-test is: t = \frac{\bar{x} - \bar{y}}{\sqrt{SEM_x + SEM_y}} where: SEM_x = \frac{\sigma^2_x}{n_x} (and likewise for y). Part of this makes sense: it is satisfactorily proven to me that that Var(\bar{x} -...

I'm with you up to step 4 can you explain how current division was used here in more detail? apparently Kirchoff's laws and Ohm's law are adequate for solving this circuit and I've gotten everything else right up until now

In any case, something's not quite right with the answer given for this problem. Maybe I should tell the publisher.

The back of the book agrees with you about the voltage, but not about the current. The answer given is 0.2 A. I think there's been a typo. They probably mean 2 A, because that's the total current I found; of course, the current can't be zero, because then the circuit would be open... So this...

Ok, I did. So I believe the total current is 2 amps. Is that right? Even if I've got that right, I can't seem to figure out how the current is divided up in the network. I tried to apply KCL with incorrect results. Stuck...

[Disclaimer: I'm pretty sure this doesn't belong in the HW questions forum. I'm a linguistics major not taking any EE courses and it's the summertime. I just happen to be using an undergrad EE text.] For the life of me I cannot crack the following: Since I believe the 70 and 30 ohm...