Algebra II.4.A.7 - Probability Rules – Exit Ticket

Last updated over 4 years ago

2 questions

Algebra II.4.A.7 - Probability Rules – Exit Ticket

Last updated over 4 years ago

2 questions

When a call is received at an airline’s call center, the probability that it comes from abroad is 0.32, and the probability that it is to make a change to an existing reservation is 0.38. a. Suppose that you are told that the probability that a call is both from abroad and is to make a change to an existing reservation is 0.15. Calculate the probability that a randomly selected call is either from abroad or is to make a change to an existing reservation. b. Suppose now that you are not given the information in part (a), but you are told that the events “the call is from abroad” and “the call is to make a change to an existing reservation” are independent. What is the probability that a randomly selected call is either from abroad or is to make a change to an existing reservation?

A golfer will play two holes of a course. Suppose that on each hole the player will score 3, 4, 5, 6, or 7, with these five scores being equally likely. Find the probability, and explain how the answer was determined that the player’s total score for the two holes will be a. 14. b. 12.

From EngageNY.org of the New York State Education Department. Grade Algebra II Mathematics Module 4, Topic A, Lesson 7. Internet. Available from https://www.engageny.org/resource/algebra-ii-modul...; accessed 21/Apr/2016.