In a survey of 3193 adults, 1408 say they have started paying bills online in th
ID: 3218991 • Letter: I
Question
In a survey of 3193 adults, 1408 say they have started paying bills online in the last year. Construct a 99% confidence interval for the population proportion. Interpret the results. A 99% confidence interval for the population proportion is ? and ? (Round to three decimal places as needed.) Interpret your results. Choose the correct answer below. A. The endpoints of the given confidence interval show that adults pay bills online 99% of the time.
B.With 99% confidence,it can be said that the population proportion of adults who say they have started paying bills online in the last year is between the enpoints of the given confidence interval.
C. With 99% confidence,it can be said that the sample proportion of adults who say they have started paying bills online in the last year is between the endpoints of the given confidence interval.
Explanation / Answer
The statistical software output for this problem is:
One sample proportion confidence interval:
p : Proportion of successes
Method: Standard-Wald
99% confidence interval results:
Therefore,
99% confidence interval will be:
0.418 and 0.464
Interpretation:
With 99% confidence,it can be said that the population proportion of adults who say they have started paying bills online in the last year is between the enpoints of the given confidence interval.
Option B is correct.
Proportion Count Total Sample Prop. Std. Err. L. Limit U. Limit p 1408 3193 0.44096461 0.0087866244 0.41833177 0.46359745Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.