Try the following:
t=(x[1,ave]-(x[2,ave])/(s[p]*sqrt(1/n1+1/n2))
S[p]^2=((n1-1)*s1^2+(n2-1)*s2^2)/(n1+n2-2)
Take the sqrt of that to get s[p]
Should be something like: t= (.759/.749875)/(.00987*.5) = 1.85
To tell if the hypothesis is rejected or not, you need to compare the value and degrees of...
The problem I'm having is getting my answers correlate with the selected answers in the back of the book. If you would like, we can correspond with Q and A type things via email. That way we can hopefully help each other out (unless you would rather do it via message board). Send me an email...
Background is Bachelor in Mat. Sci & Eng. in 2002 (same time I took FE). Starting Masters at Ohio State in the fall (Welding Eng.).
Right now I'm focusing on Dieter and Geiger books for problem solving as well as Smith and ASM Metals Handbook for general review.
Experience is primarily in...