Pregunta
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From a group of 10 boys and 13 girls, a committee of 5 students is chosen at random.
a. What is the probability that all 5 members on the committee will be girls?
b. What is the probability that all 5 members of the committee will be boys?
c. What is the probability that there will be at least 1 girl on the committee?
a. The probability that all 5 members on the committee will be girls is
(Type an integer or a simplified fraction.)

Ask by Black Parry. in the United States
Jan 23,2025

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a. The probability that all 5 members on the committee will be girls is .
b. The probability that all 5 members of the committee will be boys is .
c. The probability that there will be at least 1 girl on the committee is .

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Extra Insights

To find the probability that all 5 members on the committee will be girls, we first need to calculate how many ways we can choose 5 girls from the 13 available, and the total ways to choose 5 students from a total of 23 (10 boys + 13 girls).
  1. The number of ways to choose 5 girls from 13 is given by the combination formula , which is :
  2. The total number of ways to choose 5 students from 23 is:
  3. Now, we can find the probability that all 5 members are girls:
This fraction can be simplified:
So, the probability that all 5 members on the committee will be girls is .

For the probability that all 5 members of the committee will be boys, we follow a similar logic:
  1. The number of ways to choose 5 boys from 10 is given by:
  2. Now, we find the probability that all 5 members are boys:
This fraction can also be simplified:
So, the probability that all 5 members on the committee will be boys is .

To find the probability that there will be at least 1 girl on the committee, we can use the complement rule. First, we find the probability of having no girls (which we’ve calculated above) and subtract it from 1:
  1. The probability of having no girls (i.e., all boys):
So, the probability that there will be at least 1 girl on the committee is .

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