binomial

[grand thunder]

idk how part c works

[split kite]

U basically usin binomial PD and subbing in 5 as X

Basically what's the probability of getting exactly 5

[grand thunder]

lmao that's wrong

[split kite]

Rlly!?

Damn

My bad

[shell cosmos]

meee

i can help

[grand thunder]

pls do

i'm begging

[grand thunder]

this one can't help 🤣

[shell cosmos]

for c youre trying to find the probability that the child hits the target on the 5th throw

so try imagine it like a tree diagram, youd get miss miss miss miss hit

so probability of hitting a target is 0.1
so 1-0.1 = 0.9 is the probability of missing a target
(0.9)^4 x 0.1

@grand thunder

[grand thunder]

so essentially what it wants is to hit the target on the 5th trial?

[shell cosmos]

yeahh

[grand thunder]

ok

so why is it multiply and not add the probabilities

[shell cosmos]

imagine it like a tree diagram

you wouldnt add the probabilities you would multiply them

[grand thunder]

yeah but why

[shell cosmos]

if u added them youd get a value > 1 which is impossible

as probabilites add up to 1

it also wouldnt make sense to add them

if i flipped a coin twice
and i got P(head, head) it will be 0.5 x 0.5
if you added them youd get 1, which doesnt work

@grand thunder

[grand thunder]

ohhh ok

thank u

@split kite learn from @shell cosmos 🤣

[split kite]

Thank the lord I'm not doing stats amymotr