As part of a class project, a university student surveyed the students in the cafeteria lunch line to look for a relationship be
tween eye color and hair color among students. The table below contains the results of the survey.
(photo provided)___________________________
Eye Color
Hair
Color Blue Gray Green Brown Marginal
Totals
Blond 42 5 21 10 78
Red 12 22 19 12 65
Brown 22 5 12 34 73
Black 9 3 11 64 87
Marginal
Totals 85 35 63 120 303
_______________________________________
From the sample population of students with gray eyes, what is the relative frequency of students with red hair?
A.
0.07
B.
0.12
C.
0.34
D.
0.63
(photo provided)___________________________
Eye Color
Hair
Color Blue Gray Green Brown Marginal
Totals
Blond 42 5 21 10 78
Red 12 22 19 12 65
Brown 22 5 12 34 73
Black 9 3 11 64 87
Marginal
Totals 85 35 63 120 303
_______________________________________
From the sample population of students with gray eyes, what is the relative frequency of students with red hair?
A.
0.07
B.
0.12
C.
0.34
D.
0.63
1 answer:
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The number of unique ways is given by the number of possible
combination having distinct members.
The number of unique ways there are to arrange 4 of the 6 swimmers are <u>15 ways</u>.
Reasons:
The given parameters are;
The number of swimmers available = 6 swimmers
The number of swimmers the coach must select = 4 swimmers
Required:
The number of unique ways to arrange 4 of the 6 swimmers.
Solution:
The number of possible combination of swimmers is given as follows;
Therefore, the coach can select 4 of the 6 available swimmers in <u>15 unique ways</u>
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