Mrs. Burke's physics class has 99 students, classified by academic year and gender, as illustrated in the following table. Mrs. Burke randomly chooses one student to collect yesterday's work. What is the probability that she selects a male, given that she chooses randomly from only the juniors? Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth. Mrs. Burke's Physics Class Classification Males Females Freshmen 7 9 Sophomores 6 17 Juniors 15 12 Seniors 13 20

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Mrs. Burke's physics class has 99 students, classified by academic year and gender, as illustrated in the following table. Mrs. Burke randomly chooses one student to collect yesterday's work. What is the probability that she selects a male, given that she chooses randomly from only the juniors? Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.

Mrs. Burke's Physics Class
Classification Males Females
Freshmen 7 9
Sophomores 6 17
Juniors 15 12
Seniors 13 20
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