The report of a sample survey of 1014 adults says, \"with 95% confidence, betwee
ID: 3260115 • Letter: T
Question
The report of a sample survey of 1014 adults says, "with 95% confidence, between 9% and 15% of all Americans expect to spend more on gifts this year than last year." What does the phrase "95% confidence" mean?
a) The method used to get the interval 9% to 15%, when used over and over again, produces intervals which include the true population proportion 95% of the time.
b) 9% to 15% of all Americans will spend 95% of what they spent last year
c) 95% of all Americans will spend between 9% and 15% more than what they spent last year
d) There is a 95% chance that the percent who expect to spend more is between 9% and 15%
Explanation / Answer
ANSWER:
The report of a sample survey of 1014 adults says, "with 95% confidence, between 9% and 15% of all Americans expect to spend more on gifts this year than last year. the phrase 95% confidence mean that (a) The method used to get the interval 9% to 15%, when used over and over again, produces intervals which include the true population proportion 95% of the time.