It has been suggusted that the highest priority of retirees is travel. Thus, a study was conducted to investigate the differences in the length of stay of a trip for pre- and post-retirees. A sample of 706 travelers were asked how long they stayed on a typical trip. The observed results of the study are found below. Number of Nights Pre-retirement Post-retirement Total
4â7 240 173 413
8â13 83 70 153
14â21 40 52 92
22 or more 16 32 48
Total 379 327 706

Required:
Construct a table of estimated expected values.