In the last box you analyzed data on single live births in M

In the last box, you analyzed data on single, live births in Montana that were performed via C-section. You should have gotten a 95% confidence interval of close to (0.145, 0.269).

What is the margin of error for this confidence interval?

Interpret this interval in the context of the problem?

What does it mean to have \"95% confidence\" in the interval?

Solution

In the last box, you analyzed data on single, live births in Montana that were performed via C-section. You should have gotten a 95% confidence interval of close to (0.145, 0.269).

What is the margin of error for this confidence interval?

Margin of error =(0.269-0.145)/2 =0.062

Interpret this interval in the context of the problem?

We are 95% confident that proportion of all single, live births in Montana that were performed via C-section falls in the interval.

What does it mean to have \"95% confidence\" in the interval?

A 95% confidence interval is a range of values that you can be 95% certain contains the true mean or proportion of the population.

For a 95 % confidence interval, if many samples are collected and the confidence interval computed, in the long run about 95 % of these intervals would contain the true mean or proportion.