On the Makaloa Mat LondonJack Publishedaanghe

john9221 · Wysłany: Czw 0:26, 10 Mar 2011

w we will
compute results for the two groups separately and compare them.
apute a 95% con?dence interval for the mean DHEA-S level for 45- to
49-year-old women in the comparison group.
bpute a 95% con?dence interval for the mean DHEA-S level for 45- to
49-year-old women in the TM group.
c.Based on the intervals computed in parts a and bwould you conclude that
there is a difference in population means bet [link widoczny dla zalogowanych][link widoczny dla zalogowanych]n the comparison and TM
groups? Explain.
10.In Case Study 6.4which examined maternal smoking and child’s IQone of the
results reported in the journal article was the average number of days the infant
spent in the neonatal intensive care unit. The results showed an average of 0.35
day for infants of nonsmokers and an average of 0.58 day for the infants of
women who smoked ten or more cigarettes per day. In other wordsthe infants
of smokers spent an average of 0.23 day more in neonatal intensive care. A
95% con?dence interval for the difference in the two means extended from
–3.02 days to +2.57 days. Explain why it would have been misleading to report
“These results show that the infants of smokers spend more time in neonatal
intensive care than do the infants of nonsmokers.”
11.In a study comparing age of death for left- and right-handeyilai:
[link widoczny dla zalogowanych]
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[link widoczny dla zalogowanych]

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