s010 
Estimate of the ratio of a population

s020 
Bernoulli trial and the binomial distribution

s030 
Estimate of the ratio of a population

s040 
Normal approximation

s050 
Confidence interval

s060 
The null hypothesis

s070 
Hypothesis test for the ratio of a population

s080 
Alternative hypothesis for the ratio of a sample.

s090 
Inference on the ratio of two populations

s100 
Confidence interval for the ratio of two populations

s110 
The null hypothesis

s120 
Hypothesis test for the ratio of two populations

s130 
The alternative hypothesis

s140 
Chi squared test

s150 
The null hypothesis

s160 
Tables for chisquared próf

s170 
Chisquared test for ratios

s180 
Contingency tables

s190 
Contingency tables
