Back to Explain conditional probability in everyday language — Problem 2 · Task Set 22

Exercises: Explain Conditional Probability and Independence in Everyday Language

Work through each section in order. This standard is about EXPLAINING in plain words, so several problems ask you to write complete sentences. Remember: "A given B" and "B given A" are different questions with different reference groups; "independent" means knowing one tells you nothing about the other (it is about information, not whether the events can happen together).

Grade 10·21 problems·~30 min·Common Core Math - HS Statistics and Probability·group·hss-cp-a-5

Work through problems with immediate feedback

Fluency Practice

Identify the conditioning, judge independence, and read the table.

A headline reads, "75% of people who tried the app kept using it." Which of the following is the UNCONDITIONAL "cousin" of this claim — a different, stronger statement about everyone?

75% of all people use the app.

75% of people who kept using the app had tried it.

Among people who tried the app, 75% kept using it.

25% of people who tried the app stopped using it.