A newspaper reported on the topics that teenagers most want to discuss with their parents. The findings, the results of a poll, showed that 46% would like more discussion about the familyʹs
Financial situation, 37% would like to talk about school, and 30% would like to talk about religion.
These and other percentages were based on a national sampling of 549 teenagers. Using 99%
Reliability, can we say that more than 30% of all teenagers want to discuss school with their
Parents?

A)Yes, since the values inside the 99% confidence interval are greater than .30.
B)No, since the value .30 is not contained in the 99% confidence interval.
C)No, since the value .30 is not contained in the 99% confidence interval
D)Yes, since the value .30 falls inside the 99% confidence interval.

Question

A newspaper reported on the topics that teenagers most want to discuss with their parents. The findings, the results of a poll, showed that 46% would like more discussion about the familyʹs
Financial situation, 37% would like to talk about school, and 30% would like to talk about religion.
These and other percentages were based on a national sampling of 549 teenagers. Using 99%
Reliability, can we say that more than 30% of all teenagers want to discuss school with their
Parents?

A)Yes, since the values inside the 99% confidence interval are greater than .30.
B)No, since the value .30 is not contained in the 99% confidence interval.
C)No, since the value .30 is not contained in the 99% confidence interval
D)Yes, since the value .30 falls inside the 99% confidence interval.

Quizplus · Accepted Answer

The percentage of teenagers wanting to discuss school is 37%, which is already greater than 30%. The confidence interval would provide a range of values that are likely to include the true population proportion with 99% confidence. Since 37% is the sample proportion and it is greater than 30%, we can say with confidence that more than 30% of all teenagers want to discuss school with their parents, assuming the confidence interval does not dip below 30%. The specific mention of confidence intervals and their relation to the 30% figure is not necessary to make this determination based on the information given.

A Newspaper Reported on the Topics That Teenagers Most Want