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).
Stacey Warren - Expert brainly.com
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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)
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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
total number in Grade 9 (add up all the numbers in that row)
so it B @phi
are you able to find
P(Grade 9 | opposed)
do you see the opposed column? what is the sum of that column?
and 2 out of the 33 are Grade 9
so the probability of Grade 9 given opposed is 2/33
okay i understand that
P(opposed | Grade 9)
we are "given Grade 9"
what is the sum of numbers in Grade 9 ?
and how many of that 14 are "opposed" ?
what is the fraction you should make?
so now you have
which one is bigger ?
so its c
so you want the relation that has the "big side" next to the 2/14
2/33 < 2/14