Question

What does the confidence interval tell about the population of all adult​ females? Select the correct choice below​ and, if​ necessary, fill in the answer​ box(es) to complete your choice. A. We are 90​% confident that the interval from nothing to nothing actually contains the true mean attractiveness rating of all adult females. ​(Round to one decimal place as​ needed.) B. We are confident that 90​% of all adult females have attractiveness ratings between nothing and nothing. ​(Round to one decimal place as​ needed.) C. The results tell nothing about the population of all adult​ females, because participants in speed dating are not a representative sample of the population of all adult females.

Answer 1

A. We are 90% confident that the interval from nothing to nothing actually contains true mean attractiveness rating of all adult females.

Explanation:

The population is set of items which are similar in nature and that are to be observed for an outcome. The Confidence Interval is a defined probability that the parameters lies in this range. Population parameter is quantity which enters in probability distribution of random variable. In the given question the confidence interval is 90% which means the parameters lies within this range.