SOLUTION: Five students are equally qualified to represent their schoolat an awards ceremony. Two students will be chosen randomly to go to the ceremony.
A.) If Tony is one fo the five stud
Algebra.Com
Question 205373: Five students are equally qualified to represent their schoolat an awards ceremony. Two students will be chosen randomly to go to the ceremony.
A.) If Tony is one fo the five students,what is his probability of being chosen?
B.)Tony's friend, Allecia who was also eligible to go has been chosen. What is Tony's probabilityof being chosen when he learns Allecia is going?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Five students are equally qualified to represent their schoolat an awards ceremony. Two students will be chosen randomly to go to the ceremony.
A.) If Tony is one fo the five students,what is his probability of being chosen?
# of pairs with tony in the pair: 1*4=4
---
3 of pairs without restriction: 5C2 = 10
---
P(Tony is in the pair chosen) = 4/10 = 2/5
======================================================
B.)Tony's friend, Allecia who was also eligible to go has been chosen. What is Tony's probability of being chosen when he learns Allecia is going?
P(tony chose | alecia chosen) = 1/4
=================================================
Cheers,
Stan H.
RELATED QUESTIONS
At an awards ceremony, nine women and seven men are each to receive an award and are to... (answered by MathLover1,greenestamps)
Five students will be randomly selected from the seven top students in mathematics to... (answered by jim_thompson5910)
Five students will be randomly selected from the seven top students in mathematics to... (answered by Fombitz)
Suppose a college scholarship committee must select two students to receive a... (answered by ewatrrr)
Six female students and five male students are nominated for scholarships. Only 3... (answered by ewatrrr)
How many different sets of 4 students can be chosen out of 17 qualified students to... (answered by Alan3354)
Among 120 applicants for a job in an insurance company, only 80 are actually qualified.... (answered by ikleyn)
Suppose that a class of 30 students are assigned to write an essay. if 4 essays are... (answered by stanbon)
Suppose that 85% of graduating students attend their graduation ceremony. A group of 15... (answered by Boreal)