Incorrect Question 7 0 I 1 Pts Independent random samples from two regions in the same area gave the following chemical measurements (ppm). Assume the population distributions of the chemical are mound-shaped and symmetric for these two regions. Region I: x1 ,"1=12 1008 852 567 749 764 727 945 657 880 773 1023 1002 Region II: x2 , \"2 =15 1070 750 879 836 711 1070 706 866 608 892 891 965 998 1089 852 443 Let \"1 be the population mean for x1 and \"2 be the population mean for x2 Find a 90% condence interval for H1 _ \"2 - 84.56 to 129.98 - 87.63 to 133.05 - 124.92 to 81.50 - 129.98 to 84.56 - 127.33 to 81.8