Math 240

Jump to level 1 A state housing department is trying to determine if housing prices in county B are lower than in county A. The U 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 chose a larger sample from county A. The results of the data collected are shown below. CWA County I Sm 665 Sunni-u W am 09mins DM_1 0.739 p~hat_z County A samples 711 = EX' 9 County B samples 912 2 Sample proportion for county A samples 131 = Ex 1 234 U) an'Dle CT 33"'t'2'1l'; for county 8 samples f); =