Math Problem Statement

Find the probability that a student got an 'A' given they are female, based on the provided table of test grades and gender.

Solution

To solve the problem, we need to compute the conditional probability of a student receiving an "A" given that the student is female. The formula for conditional probability is:

P(AB)=P(AB)P(B)P(A \,|\, B) = \frac{P(A \cap B)}{P(B)}

Here:

  • AA: The event that the student got an "A."
  • BB: The event that the student is female.

From the given table:

  • The number of females who got an "A" (ABA \cap B) = 19.
  • The total number of females (BB) = 52.

So:

P(A | Female)=Number of females who got an "A"Total number of females=1952.P(\text{A | Female}) = \frac{\text{Number of females who got an "A"}}{\text{Total number of females}} = \frac{19}{52}.

Thus, the probability is:

P(A | Female)=19520.365(or 36.5%).P(\text{A | Female}) = \frac{19}{52} \approx 0.365 \, (\text{or } 36.5\%).


Would you like a detailed breakdown of the formula or related concepts?

Related Questions:

  1. What is the probability of a randomly chosen student being male and getting a "B"?
  2. What is the probability of selecting a male student?
  3. How do you calculate the probability of a student getting a "C" given they are female?
  4. What is the total probability of a student scoring an "A" (regardless of gender)?
  5. How does conditional probability differ from joint probability?

Tip:

To solve conditional probability problems, always start by identifying the subset of the population you're focusing on and ensure the denominator reflects that subset.

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Math Problem Analysis

Mathematical Concepts

Conditional Probability
Basic Probability

Formulas

P(A | B) = P(A ∩ B) / P(B)

Theorems

Conditional Probability Theorem

Suitable Grade Level

Grades 9-12