InkLoop/NYS Standards/NY-S.CP.7NY-S.CP.7
Algebra IIConditional Probability and the Rules of Probability60 target questions
Apply the Addition Rule P(A or B) = P(A) + P(B) - P(A and B) and interpret the answer in terms of the model.
Sample Practice Questions (3)
1
A survey of 100 students was conducted to see if they prefered Math or English. The results are shown in the table below. If a student is selected at random, what is the probability that the student is a Senior or prefers Math?
| Math | English | Total | |
|---|---|---|---|
| Junior | 25 | 25 | 50 |
| Senior | 20 | 30 | 50 |
| Total | 45 | 55 | 100 |
Open response · diagram · tableSee Answer + Explanation →
2
Based on the Venn diagram provided, what is the probability that a randomly selected element belongs to Set A or Set B?
A
B
C
D
Multiple choice · diagramSee Answer + Explanation →
3
Look at the Venn diagram representing sets and within a sample space. If and , and , determine the probability of the intersection .
A
B
C
D
Multiple choice · diagramSee Answer + Explanation →
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