STAT 245 Study Guide - Final Guide: Confidence Interval
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5, 8, 18, 24, 60, 84, 96 xb = 42. 1 sb = 37. 48. We have evidence that we can reject h0 . The variances seem to be significantly different, and this will have a bearing on our interpretation of the other test"s results. ex t003 (altman,pp. The 24-hour total energy expenditure in two groups of women was compared. (prentice et al. , 1986) the subjects were classified as lean" (group 1) or obese" (group 2). Lean observations (in mj/day): g1 = c(6. 13, 7. 05, 7. 48, 7. 48, 7. 53, 7. 58, 7. 90, 8. 08, 8. 09, 8. 11, 8. 40, Obese observations: g2 = c(8. 79, 9. 19, 9. 21, 9. 68, 9. 69, 9. 97, 11. 51, 11. 85, 12. 79) #(n=9) mean(g1) [1] 8. 066154 sd(g1) [1] 1. 23808 mean(g2) [1] 10. 29778 sd(g2) [1] 1. 397871 t. test(g1,g2) t. test(g1,g2) The dietary behaviour of low-income women was evaluated by means of a six-mc-question test. The treatment group watched a 30-minute multimedia program at a food stamp kiosk. Each subject"s score was an integer between 0 and 6, inclusive.
