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UkoKoshka
20 days ago
15

Select the correct answer. The probability of a student scoring 75% in class work is 0.64, and the probability of a student scor

ing 85% is 0.45. Event A: The student scores 75%. Event B: The student scores 85%. The probability of a student scoring 85% in class work, given that they have already scored 75% in class work, is 0.55. The probability of a student scoring 75% in class work, given that they have already scored 85% in class work, is 1. Which statement is true? A. Events A and B are independent because P(A|B) = P(A). B. Events A and B are independent because P(A|B) = P(B). C. Events A and B are independent because P(A|B) = P(A) + P(B). D. Events A and B are not independent because P(A|B) ≠ P(A). E. Events A and B are not independent because P(A|B) = P(A).
Mathematics
1 answer:
tester [8.8K]20 days ago
7 0

Answer:

Events A and B are dependent since P(A|B) ≠ P(A).

Step-by-step explanation:

The given probabilities show that a student has a 0.64 chance of scoring 75%, whereas the chance for an 85% score is 0.45.

If a student scores 85%, it implies that they must have also scored 75%.

This indicates that event B relies on event A.

Therefore, events A and B are not independent because P(A|B) ≠ P(A).

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Answer:

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