9, QUESTION 9 KEY Region 1 = NW Population 1 = Under 50,000 Region 2 = SW Popula
ID: 3069524 • Letter: 9
Question
9,
QUESTION 9
KEY
Region 1 = NW
Population 1 = Under 50,000
Region 2 = SW
Population 2 = 50,000 - 100,000
Region 3 = NE
Population 3 = Over 100,000
Region 4 = SE
Count of Population
Region
Total
Population
1
2
3
4
1
28
56
33
36
153
2
36
36
44
31
147
3
36
48
34
32
150
Total:
100
140
111
99
450
Big Burger is a fast food restaurant that has 450 locations all over the U.S. Use the excel output above to answer the following question.
Questions:
Assuming a selected restaurant is not in a city with population size over 100,000, what is the probability the restaurant is in the east?
KEY
Region 1 = NW
Population 1 = Under 50,000
Region 2 = SW
Population 2 = 50,000 - 100,000
Region 3 = NE
Population 3 = Over 100,000
Region 4 = SE
Explanation / Answer
probability the restaurant is in the east given not in a city with population size over 100,000
=P(region 3 or region 4| not population 3) =(33+36+44+31)/(153+147)=144/300 =0.48
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