Algebra II.4.A.4 - Calculating Conditional Probabilities and Evaluating Independence Using Two-Way Tables – Exit Ticket

Last updated over 4 years ago

2 questions

Question 1

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Algebra II.4.A.4 - Calculating Conditional Probabilities and Evaluating Independence Using Two-Way Tables – Exit Ticket

Last updated over 4 years ago

2 questions

Question 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.

Question 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.

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.

Question 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.