A teacher collected data from a class of eighth grade students on whether or not they play a sport and whether or not they are in the school musical. The two-way table below shows the data collected.Which association does the two-way table suggest? A. None of the associations listed are correct. B. Those who are in the school musical tend not to play a sport. C. Those who are in the school musical tend to play a sport. D. Those who are not in the school musical tend not to play a sport.
Accepted Solution
A:
Answer:B. Those who are in the school musical tend not to play a sport.Step-by-step explanation:The relative frequency for a data set n is calculated by dividing each frequency [tex]f_{x_i}[/tex] by n [tex]f_r = \frac{f_{x_i}}{n}[/tex].
We have a table that relates students who are in music school with students who practice a sport.
First, we take the population that is in the music school from the table.
Then, of the students who are in the music school, 5 practice some sport and 12 do not practice any sport
Then we calculate the relative frequencies for those who practice a sport and those who do not practice any sport.
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Relative frequency Students that are in the school musical. n=17. -------------------------------------------------- ---------------------------------------------
Sport No Sport Total n
5 12 17
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Relative frequency Students that are in the school musical. n=17
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Sport (fr) No Sport (fr) Total n
5/17 = 0.29 12/17= 0.71 17
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Most students who are in music school do not practice a sport. [tex]f_r = \frac{12}{17} = 0.705[/tex]70% of students who are in music school do not practice a sport
Now we calculate the relative frequency of students who are not in music school. Of these students 9 of them practice a sport and 4 of them do not practice any sport.
__________________________________________________________Relative frequency Students that are not in the school musical. n=13
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Sport No Sport Total n
9 4 13
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Relative frequency Students that are not in the school musical. n=13
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Sport (fr) No Sport (fr) Total n
9/13= 0.69 4/13= 0.21 13
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Note that of students who are not in music school, most of them practice a sport. [tex]f_r = \frac{9}{13} = 0.69[/tex]
Finally you can conclude that the association does the two-way table suggest is:
B. Those who are in the school musical tend not to play a sport.