SAT官方每日一题数学（9.5）

北京sat培训,sat备考资料,sat网课,sat培训机构,sat保分班,sat真题

MathematicsStandard Multiple Choice

An organization is conducting a survey asking how many US workers are

offered paid vacation. The organization surveyed 500 workers and asked them

whether they work part time or full time and whether or not they are offered

paid vacation. The following incomplete table shows the results of their

survey.

Works

part

time

Works

full

time

Offered

paid vacation

114

Not

offered paid vacation

16

Of the 500 workers surveyed, 54.6% sign said they were offered paid

vacation. Based on the information provided, what is the probability of

selecting a worker who is offered paid vacation if a part-time worker is

selected?

Selcet an answer

A.0.228

B.0.351

C.0.418

D.0.546

Answer B

EXPLANATION

Option B is correct. The probability of selecting a worker who is offered

paid vacation if a part time worker is selected is equal to the ratio of the

number of part time workers offered paid vacation to the total number of part

time workers. In the survey, 114 part time workers were offered paid vacation

and there were 325 total part time workers.

难易程度：简单

你做对了吗？