What are the mean and standard deviation of a binomial probability distribution with #n=144 # and #p=11/13 #?
The mean of a binomial distribution is simply:
Which in our case is
The standard deviation of the binomial distribution is given by:
Which in our case is:
A great resource for these kinds of questions is wikipedia, where they have a page for most distributions each of which has a table listing all of the properties and the associated equations: