Question

For the following five questions, a major research organization conducted a national survey to determine what percent of Americans feel that things are getting better for them economically. Asking 1,200 respondents called at random if their own economic situation was better today than last year, 45% reported that they were in fact better off than before. 1. Find the standard error of the proportion. 2. Find the 95% confidence interval for the population proportion. Input the lower bound (left side) here. 3. Input the upper bound (right side) for the 95% confidence interval for the population proportion here. 4. Find the 99% confidence interval for the population proportion. Input the lower bound (left side) here. 5. Input the upper bound (right side) for the 99% confidence interval for the population proportion here.

          For the following five questions, a major research organization conducted a national survey to determine what percent of Americans feel that things are getting better for them economically. Asking 1,200 respondents called at random if their own economic situation was better today than last year, 45% reported that they were in fact better off than before.

1. Find the standard error of the proportion.
2. Find the 95% confidence interval for the population proportion. Input the lower bound (left side) here.
3. Input the upper bound (right side) for the 95% confidence interval for the population proportion here.
4. Find the 99% confidence interval for the population proportion. Input the lower bound (left side) here.
5. Input the upper bound (right side) for the 99% confidence interval for the population proportion here.

Added by Carrie R.

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