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Question

vocaloid · Answer

this question is testing conditional probability

you want to find out if

P(being assigned to the requested class | being in spanish club) = P(being assigned | not being in spanish club)

vocaloid · Answer

so, find out:

1. the proportion of students in spanish club who were assigned to the requested class
2. the proportion of students NOT in spanish club who were assigned

vocaloid · Answer

if you've learned about significance tests, use one. if not, your best estimate is fine

rebeccaxhawaii · Answer

265 and 65

vocaloid · Answer

number of spanish students who got the class/number of spanish students total

vocaloid · Answer

number of non-spanish students who got the class/number of non spanish students total

vocaloid · Answer

looking for 2 fractions here

vocaloid · Answer

hint:

top row

vocaloid · Answer

top row/bottom row

rebeccaxhawaii · Answer

365/500

rebeccaxhawaii · Answer

wait no

rebeccaxhawaii · Answer

number of spanish students who got the class/number of spanish students total 

total meaning 500? and got the class meaning got what was requested?

vocaloid · Answer

let me rephrase

vocaloid · Answer

spanish club students who got the class/total number of spanish club students

vocaloid · Answer

265/355

vocaloid · Answer

compared to

100/165 for the non-spanish club students

rebeccaxhawaii · Answer

vocaloid in what world is that a row

rebeccaxhawaii · Answer

thats a column

vocaloid · Answer

top row are the numerators

vocaloid · Answer

bottom row are the denominators

vocaloid · Answer

265 and 100 are the numerators

vocaloid · Answer

355 and 165 are the denominators

rebeccaxhawaii · Answer

okok

vocaloid · Answer

giving you your fractions:

265/355 and 100/165

vocaloid · Answer

convert them to decimals

vocaloid · Answer

if they are similar, then there is an equal opportunity.

vocaloid · Answer

if not, there may be some favoritism within the spanish club for getting requested classes

vocaloid · Answer

apologies if it was confusing :S

rebeccaxhawaii · Answer

no no your great. im just horrible with probability. okay so 74.6 is not equal to 60.6

vocaloid · Answer

right, so since the first fraction is a lot larger than the second, there may be not be equal opportunity

rebeccaxhawaii · Answer

okay so thats all. just include the fractions and how they arent equal. thanks.