and do not round answers unless told to: udent was recommended and was judged to be very good ery good, given that they were actually recommended rery good

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
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In a certain large town, 15% of High School students who play in the school marching band in any year were recommended by their Middle School band teacher.
Of those who joined the marching band because they had been recommended, 90% are very good at what they do.
Of those who joined the marching band and weren't recommended, only 60% are very good.
A random High School marching band student is chosen. The student plays in front of experts who are qualified to judge a student as very good or not.
For the purpose of this question, suppose the percentages in the sample motch all percentages stated above.
Find each probability and do not round answers unless told to:
a) The High School student was recommended and was judged to be very good
b) The student was very good, given that they were actually recommended
c) The ștudent was very good
d) That if the student were good, they were recommended
Round to 2 decimal positions.
Transcribed Image Text:In a certain large town, 15% of High School students who play in the school marching band in any year were recommended by their Middle School band teacher. Of those who joined the marching band because they had been recommended, 90% are very good at what they do. Of those who joined the marching band and weren't recommended, only 60% are very good. A random High School marching band student is chosen. The student plays in front of experts who are qualified to judge a student as very good or not. For the purpose of this question, suppose the percentages in the sample motch all percentages stated above. Find each probability and do not round answers unless told to: a) The High School student was recommended and was judged to be very good b) The student was very good, given that they were actually recommended c) The ștudent was very good d) That if the student were good, they were recommended Round to 2 decimal positions.
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