Question

population very large but unknown... n = 60 sampled negative = 51 sampled positive = 9...

population very large but unknown...
n = 60
sampled negative = 51
sampled positive = 9

is there evidence that less than 20% of popuation will test positive? conduct the appropriate hypothesis test at 1% sig. level, then compare to critical value.
Math   Statistics-And-Probability   
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