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Question 3: Consider the contingency table from Question 2. Post-flight respiratory problem? Yes No Re-circulate Air...

Question 3: Consider the contingency table from Question 2.

Post-flight respiratory problem? Yes
No

Re-circulate Air (RA) 110
405

Do not re-circulate air (RAc) 108
477

A passenger just gets of a flight from San Francisco to Denver. What is the probability

  1. (a) What is the probability that they flew on (i) on a plane that re-circulated the air? (ii) will have post-flight respiratory problems?

  2. (b) he/she will have flown on a plane with re-circulated air or will experience post-flight respiratory prob- lems?

  3. (c) If he/she experienced post-flight respiratory problems, what is the probability they flew on a plane where the air was not re-circulated?

  4. (d) Are the events ‘RA’ and experiencing ‘post-flight respiratory problems mutually exclusive events? Independent events?

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