Question

Do women spend more time talking on the phone than​ men? a student collects data from students at her university and reports a​ 90% confidence interval for mu​(men)minusmu​(women) to be ​(minus​150,30), where mu​(men) is the mean number of minutes per month for men. based on this confidence​ interval, can it be concluded that mu​(women) is higher than mu​(men)?

Answer 1

Answer:

No

Explanation:

Remember, that as used in statistics the Confidence intervals only ascertain the extent to which a sample is uncertainty or certainty, that is, the student report of a​ 90% confidence interval is just a probability the university population of men and women surveyed would fall under this range of value ​(minus 150,30).

Therefore, it cannot be concluded that mu​(women) is higher than mu​(men.