The probability that Alice arrives on time is 80%. The probability that Bob arrives on time is 40%. If neither affects the other, what is the probability that,   a) both Alice and Bob both arrive on time?         b) that either Alice or Bob arrives on time?         c) that both are late?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The probability that Alice arrives on time is 80%. The probability that Bob arrives on time is 40%. If neither affects the other, what is the probability that,

 

  1. a) both Alice and Bob both arrive on time?

 

 

 

 

  1. b) that either Alice or Bob arrives on time?

 

 

 

 

  1. c) that both are late?

 

 

 

 

  1. d) that either Alice or Bob is late?

 

 

 

 

  1. Referring to question 5, which events are complements of each other?
  2. a) and c) are complements of each other.
  3. a) and d) are complements of each other.
  4. Both, a) and c) are complements as well as b) and d) are complements.
  5. Both, a) and d) are complements as well as b) and c) are complements.

 

 

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