This tutorial explains the following. Z a2 is an alpha levels z-score for a two tailed test see note below. Practice constructing a one-sample z interval for a proportion.
According to the Z Score to P Value Calculator the two-tailed p-value associated with z 0816 is 04145.
Test Statistics is defined and given by the following function. The computation of confidence intervals is completely based on mean and standard deviation of the given dataset. We call such an interval a one-sample z interval for a population mean. Z p P s where P is the hypothesized value of population proportion in the null hypothesis p is the sample proportion and s is the standard deviation of the sampling distribution.
