Country a successes 366 observation 700 proportion 0.523 confidence level 90% z-score negative 1.372 P value 0.085 country B successes 192 observations 400 proportion 0.480 estate housing department is trying to determine if housing process in County B are lower than in County a the department decides to randomly sample recently sold houses in both counties and determine what proportion sold for more than $250,000 since County a is considerably larger than County B the housing department shows a larger sample from County a the results of the data collected are shown below country a samples equal what country B samples equal what sample proportion for counting a samples equal what sample proportion for county B samples equal what P equals what Z = what