# Represent and Determine Probability Question

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## Grade 10 Represent and Determine Probability CCSS: HSS-CP.A.3

- The events are dependent. After the first student has been chosen, there are fewer students, and so the probability of choosing the second student will be different than if the second student had been chosen from the full group of students.
- The events are dependent. Since [math]P(L) = 4/5[/math], [math] P(L|A) = 14/17[/math], and these are not equal, the events are dependent.
- The events are dependent. [math]P(A " then " L) = 3/85[/math] and [math]P(A) * P(L) = 4/25[/math]. Since these are not equal, the events are not independent, and must be dependent.
- The events are independent. Because choosing the first student as a 90+ average student doesn't change the number of students with an average below 90, the probability will remain the same regardless of the first event.