每日一题

Mathematics

A group of 9,000 dentists were selected at random from all US dentists to complete a survey. Based on the survey results, 3,600 particpants reported using text messages to remind clients of upcoming appointments. If the population of US dentists was 147,000 at the time of the survey, how many US dentists could be expected to use text messages for appointment reminders?

A.12600 dentists
B.58800 dentists
C.159600 dentists
D.367500 dentists

答案和解析

答案：B

解析：

Option B is correct. Setting up the proportion x/147000 = 3600/9000 and solving for x will yield the expected number of dentists.