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Sagot :
Answer:
(a) 43%
(b) 49%
Step-by-step explanation:
Add a total column and a total row to the table:
[tex]\begin{tabular}{| c | c | c | c |}\cline{1-4} & Playing video games & Watching TV & Total\\\cline{1-4} Girls & 45 & 108 & 153\\\cline{1-4} Boys & 84 & 63 & 147\\\cline{1-4} Total & 129 & 171 & 300\\\cline{1-4}\end{tabular}[/tex]
Part (a)
Percentage of students who prefer video games:
[tex]=\dfrac{\textsf{total no. of students who play video games}}{\textsf{total no. of students}} \times \sf 100\%[/tex]
[tex]=\sf \dfrac{129}{300} \times 100 \%[/tex]
[tex]= \sf 43 \%[/tex]
Part (b)
Percentage of students who are boys:
[tex]=\dfrac{\textsf{total no. of students who are boys}}{\textsf{total no. of students}} \times \sf 100\%[/tex]
[tex]=\sf \dfrac{147}{300} \times 100 \%[/tex]
[tex]= \sf 49 \%[/tex]
Answer:
total num playing video games/total no of studen×100
a) 43%
b) 49%
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