Please explain how to do this 1 Suppose we have the results

Please explain how to do this!

1. Suppose we have the results of a Norman Transcript survey which asks participants opinions regarding their attitudes toward OU.

Based on 400 interviews, the Transcript reports that 7% of Norman citizens can\'t stand the University.

How should the transcript report the results?

Question options:

We can be 95% confident that the percent of Norman Citizens who can\'t stand OU is 5% +/- 7%.

We can be 95% confident that the percent of Norman Citizens who can\'t stand OU is 7% +/- 7%.

We can be 95% confident that the percent of Norman Citizens who can\'t stand OU is 5% +/- 5%.

We can be 95% confident that the percent of Norman Citizens who can\'t stand OU is 7% +/- 5%.

Solution

Note that our point estimate is the result of the survey, 7%.

Now, the margin of error is 5%.

Thus, as the confidence interval is of the form

p^ +/- E

Then it is

7% +/- 5%. [ANSWER, D]

We can be 95% confident that the percent of Norman Citizens who can\'t stand OU is 7% +/- 5%.   [ANSWER, D]