Algebra II.4.A.4 - Calculating Conditional Probabilities and Evaluating Independence Using Two-Way Tables – Exit Ticket
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Last updated almost 3 years ago
2 Questions
10
1.
The following hypothetical 1000 two-way table was introduced in the previous
lesson:
Are the events “a randomly selected person watched the online ad” and “a
randomly selected person plans to vacation in New York within the next year”
independent or not independent? Justify your answer using probabilities
calculated from information in the table.
10
2.
A survey conducted at a local high school indicated that 30% of students have a
job during the school year. If having a job and being in the eleventh grade are
not independent, what do you know about the probability that a randomly selected
student who is in the eleventh grade would have a job? Justify your answer.
From EngageNY.org of the New York State Education Department. Grade Algebra II Mathematics Module 4, Topic A, Lesson 4. Internet. Available from https://www.engageny.org/resource/algebra-ii-modul...; accessed 21/Apr/2016.