CSSA Math E1 Predictions? (1 Viewer)

[Average Boreduser]

What do yall think this test will assess?
I've been thinking they'll likely put a proj motion on the q14, uhhh induction q13/12....


what r thoughts?

 

[xoNat]

I predict we'll get a question about jellybeans

 

[Average Boreduser]

I predict we'll get a question about jellybeans

based on what evidence?

 

[carrotsss]

based on what evidence?

vibes

 

[bruhmoment.]

idk they havent put volume yet as q14 so i feel like they may. geo vector proofs is what everyone is saying is guaranteed since last yr the paper barely had vectors (if u discard projectile). i agree with projectile being the hardest. they usually like to do that. if they do force velocity, then chat, im cooked.

 

[xoNat]

Good luck everyone

 

[xoNat]

Holy shit that was so hard

 

[xoNat]

Even worse, there wasn't a question about jellybeans

 

[xoNat]

Literally none of the past papers helped

 

[samziq06]

Literally none of the past papers helped

Fr wtf was that test what did you think you got ?

 

[xoNat]

Fr wtf was that test what did you think you got ?

Idk like 55%

 

[tywebb]

what r thoughts?

12e - did you use continuity correction? If so you get approximation 0.8461

The actual answer using binomial sum is 0.8462 - very close to 0.8461

Binomial sum is very cumbersome - but there is another way which very few students (or teachers) know about - which gives same answer much more quickly: regularised incomplete beta function

Without continuity correction you get 0.7939 which is far less accurate, nevertheless syllabus is unclear if continuity correction is required, so i suspect this will be marked correct despite being far less accurate.


which method did you use?

 

[tywebb]

Actually the exact value for alternative methods 1 and 2 are both

 

[tywebb]

That's two hundred and fifty two quadrillion one hundred and ninety six trillion eight hundred and fifty seven billion six hundred and thirty eight million four hundred and twenty nine thousand seven hundred and thirty three over two hundred and ninety eight quadrillion twenty three trillion two hundred and twenty three billion eight hundred and seventy six million nine hundred and fifty three thousand one hundred and twenty five

 

[Average Boreduser]

12e - did you use continuity correction? If so you get approximation 0.8461

The actual answer using binomial sum is 0.8462 - very close to 0.8461

Binomial sum is very cumbersome - but there is another way which very few students (or teachers) know about - which gives same answer much more quickly: regularised incomplete beta function

Without continuity correction you get 0.7939 which is far less accurate, nevertheless syllabus is unclear if continuity correction is required, so i suspect this will be marked correct despite being far less accurate.

View attachment 43954
which method did you use?

I didn't get that in my exam. We skipped normal distributions.