Answer Happy

(1 point) 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 682 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 4–7 231 165 396 8 13 85 72 157 14 – 21 30 53 83 22 or more 12 34 46 Total 358 324 682 With this information, construct a table of estimated expected values. Number of Nights Pre-retirement Post-retirement 4 – 7 8 – 13 14 – 21 22 or more Now, with that information, determine whether the length of stay is independent of retirement using a = 0.01. (a) x² (b) Find the degrees of freedom: (d) The final conclusion is A. There is not sufficient evidence to reject the null hypothesis that the length of stay is independent of retirement. •B. We can reject the null hypothesis that the length of stay is independent of retirement and accept the alternative hypothesis that the two are dependent.