Researchers at Carleton University in Canada studied a random sample of 10 first-year students who lived on campus and a random sample of 10 first-year students who lived off campus. They measured the weight gain of these students (in kg) during their first year of college. Their study yielded the following summary statistics: On-campus Off-campus ?1̅̅̅=2.46 ?2̅̅̅=0.85 ?1 =3.26 ?2 =2.03 ?1 =10 ?2 =10 Obtain a 95% confidence interval for the difference ?1 −?2 between the mean weight gain of first-year students
Researchers at Carleton University in Canada studied a random sample of 10 first-year students who lived on campus and a random sample of 10 first-year students who lived off campus.
They measured the weight gain of these students (in kg) during their first year of college. Their study yielded the following summary statistics:
On-campus Off-campus
?1̅̅̅=2.46 ?2̅̅̅=0.85
?1 =3.26 ?2 =2.03
?1 =10 ?2 =10
Obtain a 95% confidence interval for the difference ?1 −?2 between the mean weight gain of first-year students who lived on-campus and first-year students who lived off-campus. Assume that the standard deviations of these two populations are different.
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