SajjadAhmad wrote:
Project IR Butler 2019-20 - Get one IR Question EverydayQuestion # 01, Date : 01-Oct-2019
This post is a part of Project IR Butler 2019-20.
Click here for Details Attachment:
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Refer to the pictograph of a survey of students at Central Community College. Each symbol represents 10 students in a sample of 300. Use the drop-down menus to complete each statement according to the information presented in the diagram.
1. If one student is selected at random from the 300 surveyed, the chance that the student will be isA. 1 out of 6
B. 1 out of 3
C. 2 out of 3
D. 5 out of 6
A student asked me to comment on question #1, so .....
The circle on the left holds all of the students who are 30 or over.
So all of the students who are UNDER 30 are OUTSIDE that circle.
So the students who are under 30 years of age are circled in red.
The circle on the right holds all of the students who did NOT graduate high school.
So all of the students who are OUTSIDE that circle are students who DID graduate.
So the students who graduated are circled in blue.
This means all of the students circled in green (below) represent students who are under 30, a high school graduate or both
There are 250 such people.
So, P(selected student is under 30, a high school graduate or both) = 250/300 = 5/6 = 5 out of 6
Answer: D
Cheers,
Brent
how did you figure out that those symbols above two circles are high diploma... i mean those marked in red circle had no idea what it meant