2026 HSC CHAT (27 Viewers)

f7eeting

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ok bump. I know how to do a but B is very confusing. mY teacher put worked solutions up but I don't get when u draw the 2nd tree for when they pick the second person, (if first person is married woman). Like how does it affect that treeView attachment 49521

View attachment 49522
wait what the hay bahaha are we in the same class?? lol
anyways, if you know the first person picked is a woman, then that means that there's one less person you can choose (bc u cant choose that woman again) meaning that the total amount of people goes from 66 to 65.
the number of males stays the same, so the number of married/unmarried men is unaffected and therefore the chance of a man being unmarried is 21/65.

to go a little further, since a married woman has been chosen, you can also consider how that would affect the sample space of women. it will reduce the total amount of people to choose from by 1, but also reduce the number of women in specific by 1, making the chance of choosing a woman 31/65 (which adds up)
this also means that the number of unmarried women is unaffected, and will be 13/31 whilst married women is affected and will be 18/31

if u wanna practice these kinds of calculations, these are multi-stage probability questions where the events are dependent on each other, like choosing something without replacement
 

spiderlemonade

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bigupsanky

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year 12 isnt worth it like imagine yourself getting a 99.95 atar but you realise that u couldve spent time watching the new avengers movies coming up, spiderman beyond the spider verse, jjk season 3, one piece episodes. You're missing out on everything bruh
 

ellurbee

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Hey guys, just wondering if any1 had any resources for me?
I'm looking for a practice paper for:
MOD 5 Biology - hereditary
but i've looked in many places and can't find any </3
anyone got any ideas? resources fro me?
 

Study to success

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Hey guys, just wondering if any1 had any resources for me?
I'm looking for a practice paper for:
MOD 5 Biology - hereditary
but i've looked in many places and can't find any </3
anyone got any ideas? resources fro me?
Maybe try studocu, and then maybe assessment task 1 papers from thsc and acehsc. I think I have kiss mod 5 worksheets
 

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