Question
In: Statistics and Probability
A newsgroup is interested in constructing a 95% confidence interval for the proportion of all Americans...
A newsgroup is interested in constructing a 95% confidence interval for the proportion of all Americans who are in favor of a new Green initiative. Of the 537 randomly selected Americans surveyed, 368 were in favor of the initiative. a. With 95% confidence the proportion of all Americans who favor the new Green initiative is between and . b. If many groups of 537 randomly selected Americans 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 Americans who favor the Green initiative and about percent will not contain the true population proportion.
Solutions
Expert Solution
a. With 95% confidence the proportion of all Americans who favor the new Green initiative is between 0.646 and 0.7246.
b. If many groups of 537 randomly selected Americans were surveyed, then a different confidence interval would be produced from each group. About 95 percent of these confidence intervals will contain the true population proportion of Americans who favor the Green initiative and about 5 percent will not contain the true population proportion.
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