With 90% confidence the difference in the proportions of Texans and New Yorkers who favor a new Green initiative is between___________ (round to 3 decimal places) and _______________(round to 3 decimal places). b. If many groups of 566 randomly selected Texans and 548 randomly selected New Yorkers were surveyed, then a different confidence interval would be produced from each group. About ___________percent of these confidence intervals will contain the true population proportion of the difference in the proportions of Texans and New Yorkers who favor a new Green initiative and about___________ percent will not contain the true population difference in proportions.
A newsgroup is interested in constructing a 90% confidence interval for the difference in the proportions of Texans and New Yorkers who favor a new Green initiative. Of the 566 randomly selected Texans surveyed, 421 were in favor of the initiative and of the 548 randomly selected New Yorkers surveyed, 461 were in favor of the initiative.
a. With 90% confidence the difference in the proportions of Texans and New Yorkers who favor a new Green initiative is between___________ (round to 3 decimal places) and _______________(round to 3 decimal places).
b. If many groups of 566 randomly selected Texans and 548 randomly selected New Yorkers were surveyed, then a different confidence interval would be produced from each group. About ___________percent of these confidence intervals will contain the true population proportion of the difference in the proportions of Texans and New Yorkers who favor a new Green initiative and about___________ percent will not contain the true population difference in proportions.
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