Given a population in which the proportion of items with a desired attribute is p=0.25, if a sample of 400 is taken:
a. What is the standard deviationof the samplingdistribution of _
b. What is the probabilitythe proportion of successes in the sample will be greater tghan 0.22?
A step-by-step method for computing sampling Distribution of a Proportion is given in the answer (see attachments).