1. During the H1N1 flu pandemic between 2010 and 2011, 415 people were infected
ID: 3370174 • Letter: 1
Question
1.
During the H1N1 flu pandemic between 2010 and 2011, 415 people were infected in the province of Alberta, Canada. Among the 223 infected people registered as First Nation, 105 were living in an urban area; 97 out of the 192 infected people who are not First Nation came from an urban area. (“First Nation” is the Canadian version of “native American.”)
Let A be the event that a flu patient is First Nation and B be the event that the patient is from a rural area.
Find P(A and B).
0.495
0.529
0.276
0.284
2.
During the H1N1 flu pandemic between 2010 and 2011, 415 people were infected in the province of Alberta, Canada. Among the 223 infected people registered as First Nation, 105 were living in an urban area; 97 out of the 192 infected people who are not First Nation came from an urban area. (“First Nation” is the Canadian version of “native American.”)
Let A be the event that a flu patient is First Nation and B be the event that the patient is from a rural area.
If a flu patient is selected at random and found to be First Nation, what is the conditional probability that the patient is from an urban area?
0.529
0.520
0.253
0.471
A.0.495
B.0.529
C.0.276
D.0.284
2.
During the H1N1 flu pandemic between 2010 and 2011, 415 people were infected in the province of Alberta, Canada. Among the 223 infected people registered as First Nation, 105 were living in an urban area; 97 out of the 192 infected people who are not First Nation came from an urban area. (“First Nation” is the Canadian version of “native American.”)
Let A be the event that a flu patient is First Nation and B be the event that the patient is from a rural area.
If a flu patient is selected at random and found to be First Nation, what is the conditional probability that the patient is from an urban area?
A.0.529
B.0.520
C.0.253
D.0.471
Explanation / Answer
1)total number of First Nation persons and rural area persons =223-105=118
P(A and B) =118/415=0.284
option D is correct
2)
P(urban area|first nation)=105/223=0.471
option D
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