Labels:bulletin board | cabinet | dialog box | door | earth | sky | window OCR: Vancov er fc San Franc San Francisco tc Vancouver Mean 2.142 1.84428571428571 Known Variance 0.015 0.015 observ ations 10 Hypothesized Mean D observed Mean Differt .297714285714286 .9326307 320106 (z=>Z) one -tail .056472193le-07 Critical one -tail .64485 5362695147 two -tail 8.11294438621e-07 Critical two- -tail 95996398454005 64485362695147
