For a binomial experiment with r successes out of n trials, what value do we use as a point estimate for the probability of success p on a single trial?
p
=

Explanation:

If r is the number of successes out of n trials , then the sample proportion of success =

For binomial experiment , if the population probability of success p on a single trial is not given , then the best point estimate for probability of success p on a single trial is the sample proportion of successes.

i.e. a point estimate for the probability of success p on a single trial :

Hence, a point estimate for the probability of success p on a single trial =

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