Math Problem Statement
Use the contingency table to complete parts a) through d) below. Event A Event B
Event C 8 6 Event D 3 13 Event E 15 5 Question content area bottom Part 1 a) Determine the probability of Upper P left parenthesis A|C right parenthesis. Upper P left parenthesis A|C right parenthesisequals 0.57 (Round to two decimal places as needed.) Part 2 b) Determine the probability of Upper P left parenthesis C|A right parenthesis. Upper P left parenthesis C|A right parenthesisequals 0.31 (Round to two decimal places as needed.) Part 3 c) Determine the probability of Upper P left parenthesis B|E right parenthesis. Upper P left parenthesis B|E right parenthesisequals 0.20
Solution
To solve these questions, we'll use the conditional probability formula:
Step-by-Step Solution:
a)
From the table:
- The frequency of
- The total frequency of
b)
From the table:
- The frequency of
- The total frequency of
c)
From the table:
- The frequency of
- The total frequency of
Final Results:
If you have any questions or need further clarification, let me know!
Here are 5 related questions you might consider:
- How would the probabilities change if the values in the table were adjusted?
- Can you derive a general formula for conditional probabilities?
- What is the complement of ?
- How does the law of total probability apply to contingency tables?
- What happens if you calculate ?
Tip: Always double-check the total frequencies when calculating probabilities from a contingency table to avoid errors.
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Math Problem Analysis
Mathematical Concepts
Conditional Probability
Contingency Tables
Probability
Formulas
P(A|C) = P(A ∩ C) / P(C)
P(C|A) = P(A ∩ C) / P(A)
P(B|E) = P(B ∩ E) / P(E)
Theorems
Law of Conditional Probability
Suitable Grade Level
Grades 9-12
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