In the Applications to the Analysis of Social Problems section of Chapter 8,the confidence intervals for the mean age at which mothers think parents should talk with children about sex and the confidence intervals for the mean age at which mothers think parents should talk with children about birth control were relatively narrow.What does this mean?
A)there is not a high level of confidence in these means
B)the means for these two variables lie in the rejection region
C)there are small amounts of sampling error
D)none of these

Question

Quizplus · Accepted Answer

Narrow confidence intervals indicate that there is a small amount of sampling error, meaning that the sample mean is likely to be very close to the population mean. This suggests a higher level of confidence in the accuracy of the sample mean. Neither A nor B are correct, as a narrow confidence interval suggests a high level of confidence in the mean, and the rejection region is not relevant for interpreting confidence intervals.

In the Applications to the Analysis of Social Problems Section