10.18 A study comparing attitudes toward death was conducted in which organ dono

Question

10.18 A study comparing attitudes toward death was conducted in which organ donors (individuals who had signed organ donor cards) were compared with nondonors. The study is reported in the journal Death Studies. Templer's Death Anxiety Scale (DAS) was administered to both groups. On this scale, high scores indicate high anxiety concerning death. The results were reported as follows. Mean 5.36 7.62 Std. Dev. 2.91 3.45 Organ Donors Nonorgan Donors Construct the 95% confidence interval for the difference between the means, non Hdonor 25 69

Explanation / Answer

x1bar - x2bar = 2.26
SE = 0.7150
CI = 95%
DF = 50
t-value = 2.0086
ME = t*SE = 1.4361

Confidence Interval, (x1bar - x2bar) +/- ME
Lower bound = 0.82388
Upper bound = 3.69612
Confidence Interval (0.8239 , 3.6961 )

x1(bar) 7.62 x2(bar) 5.36 s1 3.45 s2 2.91 n1 69 n2 25 SE = sqrt[ (s12/n1) + (s22/n2) ] (s12/n1) 0.1725 (s22/n2) 0.3387 SE 0.7150 DF = (s12/n1 + s22/n2)2 / { [ (s12 / n1)2 / (n1 - 1) ] + [ (s22 / n2)2 / (n2 - 1) ] } [ (s12 / n1)2 / (n1 - 1) ] 0.00044 [ (s22 / n2)2 / (n2 - 1) ] 0.00478 (s12/n1 + s22/n2)2 0.26 DF = 50

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