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anonymous
 one year ago
Janet wanted to understand whether grade level had any relationship to their opinion on extending the school day. She surveyed some students and displayed the results in the table below:
In favor Opposed Undecided
Grade 9 4 2 8
Grade 10 7 11 8
Grade 11 14 15 9
Grade 12 11 5 10
Compare P(Grade 9  opposed) with P(opposed  Grade 9).
anonymous
 one year ago
Janet wanted to understand whether grade level had any relationship to their opinion on extending the school day. She surveyed some students and displayed the results in the table below: In favor Opposed Undecided Grade 9 4 2 8 Grade 10 7 11 8 Grade 11 14 15 9 Grade 12 11 5 10 Compare P(Grade 9  opposed) with P(opposed  Grade 9).

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Answer choices P(Grade 9  opposed) = P(opposed  Grade 9) P(Grade 9  opposed) > P(opposed  Grade 9) P(Grade 9  opposed) < P(opposed  Grade 9) There is not enough information.

phi
 one year ago
Best ResponseYou've already chosen the best response.1to find P(Grade 9  opposed) that says Given the opposed (so circle that whole column) how many are Grade 9. write down the fraction # in Grade 9 in the opposed column divided by the total number in the opposed column (all Grades)

phi
 one year ago
Best ResponseYou've already chosen the best response.1to find P(opposed  Grade 9). which means Given Grade 9 (i.e. circle the Grade 9 row) how many in that row are opposed? make the fraction # in Grade 9 who are opposed divided by total number in Grade 9 (add up all the numbers in that row)

phi
 one year ago
Best ResponseYou've already chosen the best response.1are you able to find P(Grade 9  opposed) ? do you see the opposed column? what is the sum of that column?

phi
 one year ago
Best ResponseYou've already chosen the best response.1and 2 out of the 33 are Grade 9 so the probability of Grade 9 given opposed is 2/33

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay i understand that

phi
 one year ago
Best ResponseYou've already chosen the best response.1now do P(opposed  Grade 9) we are "given Grade 9" what is the sum of numbers in Grade 9 ?

phi
 one year ago
Best ResponseYou've already chosen the best response.1and how many of that 14 are "opposed" ? what is the fraction you should make?

phi
 one year ago
Best ResponseYou've already chosen the best response.1so now you have 2/33 2/14 which one is bigger ?

phi
 one year ago
Best ResponseYou've already chosen the best response.1so you want the relation that has the "big side" next to the 2/14 2/33 < 2/14

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0alright thank you so much
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