divide by the standard deviation you found in 7.) You should notice that 0.775 and 0.80 are about 2 standard deviations apart AND that the two-sided p-value is around 0.05, so this value {0.275) is ClDSE to the edge of values that can be considered plausible for Values between 0.80 and 0.775 are considered plausible and values smaller than 0.775, more than 2 standard deviations below 0.80, will not be plausible values for the population proportion