Math Problem Statement
In a certain country, the true probability of a baby being a boy is 0.537. Among the next five randomly selected births in the country, what is the probability that at least one of them is a girl? The probability is (Round to three decimal places as needed.)
Solution
To solve this problem, we need to use the concept of complementary probability.
Step 1: Find the probability of having all boys.
The probability that a baby is a boy is given as .
The probability that all 5 babies are boys is:
Let's calculate that value.
Step 2: Use the complementary probability to find at least one girl
The probability that there is at least one girl is the complement of all 5 being boys:
Now let's calculate this probability.The probability that at least one of the next five randomly selected births will be a girl is 0.955.
Would you like more details, or do you have any questions?
Here are 5 related questions for further exploration:
- What is the probability that all five babies are girls?
- What is the probability that exactly three out of the five babies will be boys?
- How would the probability change if the probability of a boy were different?
- What is the probability that at least two of the five babies will be girls?
- How would the approach differ if we wanted the probability of having at most one girl?
Tip: Complementary probability is a powerful technique that simplifies finding the likelihood of "at least one" occurrences in a scenario.
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Math Problem Analysis
Mathematical Concepts
Probability
Complementary Probability
Formulas
P(All boys) = (P(Boy))^n
P(At least one girl) = 1 - P(All boys)
Theorems
Complementary Probability Theorem
Suitable Grade Level
Grades 9-12