Concept explainers
(a)
To find: the probability that someone who has travelled Mexico has visited Canada too.
(a)
Answer to Problem 22E
0.444
Explanation of Solution
Given:
Formula used:
Calculation:
C = US resident has travelled Canada
M = US resident has travelled Mexico
Finding the required probability that someone who has travelled to Mexico has visited Canada too. That is
Thus, the probability that someone who has travelled to Mexico has visited Canada too is 0.444.
(b)
To Explain: that travelling to Mexico and to Canada is disjoint.
(b)
Answer to Problem 22E
Not disjoint
Explanation of Solution
Given:
From the given information, it is very clear that
(c)
To Explain: that travelling to Mexico and to Canada are independent events.
(c)
Answer to Problem 22E
Not independent event
Explanation of Solution
Given:
If C and M are two independent events, then
From part (a),
Clearly,
Therefore, the events C and M are not independent events.
Chapter 15 Solutions
Stats: Modeling the World Nasta Edition Grades 9-12
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