Chapter 9 Answers Stat 2601 9 7 a 14 4 b 10 3 c 4 5 d yes 9 13 a Ho 1 2 Ha 1 2 b t 62 c t 1 684 d Fail to reject null hypothesis there is evidence to support the Alternative hypothesis QuickTime and a TIFF Uncompressed decompressor are needed to see this picture 9 21 t 1 08 fail to reject Ho 9 41 a d b paired difference c Ho d 0 Ha d 0 d t 2 19 e reject Null hypothesis 9 47 a t 2 97 fail to reject Ho b 42 no c t 57 fail to reject Ho 23 no d t 3 23 fail to reject Ho 19 no QuickTime and a TIFF Uncompressed decompressor are needed to see this picture 9 65 Yes z 11 05 QuickTime and a TIFF Uncompressed decompressor are needed to see this picture QuickTime and a TIFF Uncompressed decompressor are needed to see this picture 9 77 a n1 n2 29 954 b n1 n2 2 165 c n1 n2 1 113 QuickTime and a TIFF Uncompressed decompressor are needed to see this picture