Supib Posted October 31, 2010 Report Share Posted October 31, 2010 Anyone here mind sharing how to solve probability questions using the calculator? Im quite lost on these...I know that for a normal distribution you can get the z using invNorm(number, mean (0), st.dev) but I hardly know anything else. Is there a list or a guide book somewhere on the internet I could use. I could really use some help. Thanks guys! (Doing math sl) Reply Link to post Share on other sites More sharing options...
genepeer Posted October 31, 2010 Report Share Posted October 31, 2010 What??? I've never used that function!normal distribution: X~N(m,s2), m=mean, s=st.devP(a < X < b) = normalcdf(a,b,m,s)poisson distribution: X~Po(m), m=meanP(X = r) = poissonpdf(m,r)P(X <= r) = poissoncdf(m,r)binomial distribution: X~B(n,p), n=Number of trials, p=Probability of eventP(X = r) = binompdf(n,p,r)P(X <= r) = binomcdf(n,p,r) Reply Link to post Share on other sites More sharing options...
Supib Posted November 1, 2010 Author Report Share Posted November 1, 2010 yeah Ive never used it either but when I was going through past papers yesterday I stumbled upon a question that couldnt be solved without a calculator and it was solved using invNorm(). Reply Link to post Share on other sites More sharing options...
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