According to the Centet for Disease Control websfte, In 2011 at least 18% of high school students have smoked a cigatene. An Introduction to Statistics class In Davies County. KY conducted a hypothesis test at the local high school (a medium slzed—appxoxlrnatelv 1,200 students—small city demographic) to determine If the local high schools percentage was lower. One hundred fifty students wete chosen at random and surveyed. Of the 150 students surveyed, 82 have smoked. Use a significance level of 005 and using appropriate statistical evidence, conduct a hypothesis test and state the conclusions.
According to the Centet for Disease Control websfte, In 2011 at least 18% of high school students have smoked a cigatene. An Introduction to Statistics class In Davies County. KY conducted a hypothesis test at the local high school (a medium slzed—appxoxlrnatelv 1,200 students—small city demographic) to determine If the local high schools percentage was lower. One hundred fifty students wete chosen at random and surveyed. Of the 150 students surveyed, 82 have smoked. Use a significance level of 005 and using appropriate statistical evidence, conduct a hypothesis test and state the conclusions.
According to the Centet for Disease Control websfte, In 2011 at least 18% of high school students have smoked a cigatene. An Introduction to Statistics class In Davies County. KY conducted a hypothesis test at the local high school (a medium slzed—appxoxlrnatelv 1,200 students—small city demographic) to determine If the local high schools percentage was lower. One hundred fifty students wete chosen at random and surveyed. Of the 150 students surveyed, 82 have smoked. Use a significance level of 005 and using appropriate statistical evidence, conduct a hypothesis test and state the conclusions.
For several decades, it was a common practice in Southern California for houses to be built with pools in the backyard (as any airplane flight which ends at a Southern California airport will reveal). Now, however, that practice may be changing, possibly because of the recent demand for landscaped homes, which experts believe help reduce pollution. A recent study examined a random sample of
153
houses built in Southern California between 1950 and 1985 and an independent, random sample of
75
houses built in Southern California from 1992 to the present. The sample of houses built in 1950 – 1985 contained
73
houses with pools, and the sample of houses built from 1992 – present contained
30
houses with pools. Based on this survey, can we conclude, at the
0.01
level of significance, that the proportion
p1
of all Southern California houses built in 1950 – 1985 that were built with pools is greater than the proportion
p2
of all Southern California houses built from…
For several decades, it was a common practice in Southern California for houses to be built with pools in the backyard (as any airplane flight which ends at a Southern California airport will reveal). Now, however, that practice may be changing, possibly because of the recent demand for landscaped homes, which experts believe help reduce pollution. A recent study examined a random sample of 127 houses built in Southern California between 1950 and 1985 and an independent, random sample of 71 houses built in Southern California from 1992 to the present. The sample of houses built in 1950 – 1985 contained 43 houses with pools, and the sample of houses built from 1992 – present contained 23 houses with pools. Based on this survey, can we conclude, at the 0.05 level of significance, that the proportion p1 of all Southern California houses built in 1950 – 1985 that were built with pools is greater than the proportion p2 of all Southern California houses built from 1992 – present that were…
For several decades, it was a common practice in Southern California for houses to be built with pools in the backyard (as any airplane flight which ends at a Southern California airport will reveal). Now, however, that practice may be changing, possibly because of the recent demand for landscaped homes, which experts believe help reduce pollution. A recent study examined a random sample of
126
houses built in Southern California between 1950 and 1985 and an independent, random sample of
80
houses built in Southern California from 1992 to the present. The sample of houses built in 1950-1985 contained
62
houses with pools, and the sample of houses built from 1992-present contained
27
houses with pools. Based on this survey, can we conclude, at the
0.05
level of significance, that the proportion
p1
of all Southern California houses built in 1950-1985 that were built with pools is greater than the proportion
p2
of all Southern California houses built from…
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