I'm trying to fathom how to answer two example problems (3.3.2 & 3.3.3) in:
Krishnamoorthy. 2006. "handbook of statistical distributions with applications"

The first requires calculating single trial probability of success for a binomial distribution when we know:
trial size=20, successes k=4, P(x<=k)=0.7
Appreciably all the binomial functions are requiring "prob", which I'm trying to estimate.

The second problem is similar:
prob=0.2, successes k=6, P(x<=k)=0.4, need to calc # trials ('size' in R).

I'm sure it'll be obvious once somebody explains, but google and R-help archive searches have failed me.  :(
thanks in advance!
Michael
_______________________________________________________
Michael Folkes
Salmon Stock Assessment
Canadian Dept. of Fisheries & Oceans     
Pacific Biological Station
3190 Hammond Bay Rd.
Nanaimo, B.C., Canada
V9T-6N7


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