Suppose That 60% of the Students Do Homework Regularly

question 77

Multiple Choice

Suppose that 60% of the students do homework regularly. It is also known that 80% of students who had been doing homework regularly end up doing well in the course. Only 20% of students who had not been doing homework regularly end up doing well in the course. What is the probability that a student does well in the course?

• A) 0.080
• B) 0.480
• C) 0.560
• D) 0.857

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Definitions:

Finite Result

An outcome or solution that is fixed and definitive, with limitations in terms of size, number, or extent.

Discrete Variable

A variable that can take on a countable number of distinct values and cannot take on every value within its range.

Discrete Random Variable

A variable that can take on a countable number of distinct values, often associated with experiments that have a finite set of possible outcomes.

Discrete Random Variable

A variable that assumes a countable number of distinct values, with each value associated with a certain probability.