下面为大家带来SAT数学推理题精选练习【题目+详细解析】相关内容如下：
Read the following SAT test question and then click on a button to select your
answer.
A survey of a random sample of 12000 adults in the US home-buying market finds
that 97% of those surveyed recognized a certain real estate brand name. If the
margin of error was 2.4%, of the following, which is the best estimate of the
percent of adults in the home-buying market in the US who recognize this real
estate brand name?
A.88%
B.92%
C.96%
D.100%
答案：C
解析：
Choice C is correct. If the researchers repeated the study many times with
randomly selected groups of US adult participants, they would expect the true
percent of adults in the home-buying market whore cognize the real estate brand
name to be within the margin of error around the sample proportion.
The interval around the sample statistic is called the confidence interval. In this
case, that interval is 97%±2.4%.
97-2.4=94.6，97+2.4=99.4
It is likely that the true percent of US adults in the home-buying market who
recognize the brand name would be between 94.6% and 99.4%.
Only one of the options falls within this range. Of these options, it is most likely
that 96% of adults in the US home-buying market recognize the real estate brand
name.