Table of Contents
- 1 What is the probability that the student is a boy?
- 2 What is the probability that the student is a sophomore given that the student is male?
- 3 What is the ratio of girls to the total number of students in the class?
- 4 How many formulas are there in probability?
- 5 What is the probability that a randomly selected person is male given the person is left handed?
- 6 How many pupils are there in a class answer?
- 7 How do you find the number of girls in a class?
- 8 What is the ratio of number of boys to number of girls?
What is the probability that the student is a boy?
This means that the probability of choosing a boy OR an A student is 1 – 3/14, or 11/14.
What is the probability that the student is a sophomore given that the student is male?
Expert Answer Thus, the probability that a randomly selected student is a sophomore or male is 2533.
What is the ratio of girls to boy?
The sex ratio at birth is not equal: in every country births are male-biased. There are biological reasons why there are slightly more boys born every year than girls. The ‘natural’ sex ratio at birth is around 105 boys per 100 girls (ranging from around 103 to 107 boys).
What is the ratio of girls to the total number of students in the class?
The ratio of number of girls to the total number of students in the class=girls+boys=20+15=35 are total students in the class. number of girls=20:35=4:7 is the answer.
How many formulas are there in probability?
Basic Probability Formulas
| All Probability Formulas List in Maths | |
|---|---|
| Disjoint Events | P(A∩B) = 0 |
| Independent Events | P(A∩B) = P(A) ⋅ P(B) |
| Conditional Probability | P(A | B) = P(A∩B) / P(B) |
| Bayes Formula | P(A | B) = P(B | A) ⋅ P(A) / P(B) |
What is the probability of a female student given that they got a B?
1 Expert Answer The probability that the student got a “B” on the test is 0.2714. The probability that the student is either a female or got a “C” on the test is 0.5714.
What is the probability that a randomly selected person is male given the person is left handed?
0.13
How this table relates to Independence of handedness and gender: The probability of a man being left-handed is 780/6000 = 0.13. Probability of a woman being left-handed is 520/4000 = 0.13. Probability of a person being left-handed is 0.13.
How many pupils are there in a class answer?
SOLUTION: There are 40 pupils in a class. There are X more girls than boys. How many boys are there in terms of X? SOLUTION: There are 40 pupils in a class. There are X more girls than boys. How many boys are there in terms of X? Question 750832: There are 40 pupils in a class.
Are there 40\% more girls than boys in a class?
First, there are 40\% more girls than boys in the class. Let g be the number of girls and b be the numbers of boys. Since there are 40\% more girls than boys we have g = 1.4 b. For example, if there are 10 boys there are 14 girls which is 40\% more than 10. Note that both b and g mus Q: There are 40\% more girls than boys in a class.
How do you find the number of girls in a class?
We can also say that the total number of students in the class is 130, so x+y=130, or the number of girls plus the number of boys is equal to 130 students. Divide by two, and get y, or the number of girls, is equal to 50 students.
What is the ratio of number of boys to number of girls?
The ratio of the number of boys to the number of girls at school is 4:5. What fraction of the students are boys? If there are 120 boys, how many students are there altogether?