Question

In a recent poll of 1 adults current debt during the next three months. A more detailed poll surveyed 1288 adult groups, 18-29, 30-49, 50-64, and 65+. Complete parts a and b below ) Do you expect the 95% confidence interval for the true proportion of all 18-to 29-year-olds who are wormed to be wider or narrower than the 95% c for the true proportion of all consumers? Explain Choose the correct answer below O A The interval for the 18 to 29-year-olds should be wider The sample size for O B. The interval for the 18-to 29-year olds should be narrower The sample size aged 18 and over 8% of respondents said they were very uncomfortable with their ability to make their monthly payments on their ts, reporting similar overall results and also noting differences among the four age of oo see this group is probably about one fourth of the sample size for all adults, one would expect the confidence interval to be wi for this group is probably about the same as the sample size for all adults so one would expect the confidence interval to be narrower The interval for the 18 to 29-year-olds should be narrower The margin of error for this groups is probably twice as large as the margin of error for all adults, so one would expect the confidence interval to be narrower 。C. The interval for the 18 to 29-year-olds should be wider. The margin of error D. 1 of for this groups is probably twice as large as the margin of error for all adults, so one would expect the confidence intenval to be wider b) Do you expect the second poll's overall margin of error to be larger or smaller than the first poll's? Explain Choose the correct answer below. The second pois margin of error is likely smaller because the second poll's standard error of the sample proportion is larger B. The second poll's margin of error is likely smaller because the second poll used a slightly larger sample size 0 A O C. The second polls margin of error is likely larger because the second poll's standard error of the sample propotion is larger. D. The second poll's margin of error is likely larger because the second poll used a slightly larger sample size 1 of oo 0 of o Click to select your answer 04/11/18 11.59pm

Answer 1

Solution:-
a) option A. The interval for the 18-29 year olds should be wider. The sample size for this group is probably about one fourth of the sample size for all adults, so one would expect the confidence interval to be wider.

b) option B. The second poll's margin of error is likely smaller because the second poll used a slightly larger sample size.