A poll surveyed people in six countries to assess attitudestoward a variety of alternate forms of energy. Suppose the data inthe following table are a portion of the poll's findings concerningwhether people favor or oppose the building of new nuclear powerplants.
Response | Country |
---|
Great Britain | France | Italy | Spain | Germany | United States |
---|
Strongly favor | 141 | 133 | 128 | 161 | 298 | 204 |
---|
Favor more than oppose | 348 | 222 | 272 | 367 | 309 | 326 |
---|
Oppose more than favor | 381 | 311 | 322 | 334 | 219 | 316 |
---|
Strongly oppose | 217 | 443 | 389 | 215 | 220 | 174 |
---|
(a)
How large was the sample in this poll?
(b)
Conduct a hypothesis test to determine whether people's attitudetoward building new nuclear power plants is independent ofcountry.
State the null and alternative hypotheses.
H0: The attitude toward building new nuclearpower plants is mutually exclusive of the country.
Ha: The attitude toward building new nuclearpower plants is not mutually exclusive of thecountry.H0: The attitude toward building newnuclear power plants is not mutually exclusive of thecountry.
Ha: The attitude toward building new nuclearpower plants is mutually exclusive of thecountry. H0: Theattitude toward building new nuclear power plants is notindependent of the country.
Ha: The attitude toward building new nuclearpower plants is independent of the country.H0:The attitude toward building new nuclear power plants isindependent of the country.
Ha: The attitude toward building new nuclearpower plants is not independent of the country.
Find the value of the test statistic. (Round your answer to twodecimal places.)
Find the p-value. (Round your answer to four decimalplaces.)
p-value =
State your conclusion.
Do not reject H0. We conclude that theattitude toward building new nuclear power plants is notindependent of the country.Do not reject H0. Wecannot conclude that the attitude toward building new nuclear powerplants is independent of the country. RejectH0. We conclude that the attitude towardbuilding new nuclear power plants is not independent of thecountry.Reject H0. We cannot conclude that theattitude toward building new nuclear power plants is independent ofthe country.
(c)
Using the percentage of respondents who "strongly favor" and"favor more than oppose," which country has the most favorableattitude toward building new nuclear power plants?
GreatBritainFrance ItalySpainGermanyUnitedStates
Which country has the least favorable attitude?
GreatBritainFrance ItalySpainGermanyUnitedStates