need help with this

Question

need help with this

thefluffmuncher · Answer

http://prntscr.com/cit6k3

thefluffmuncher · Answer

i know its d but i have to show work

thefluffmuncher · Answer

so how do i prove its d

jango_in_dtown · Answer

A binomial distribution gives us the probabilities associated with independent, repeated Bernoulli trials. In a binomial distribution the probabilities of interest are those of receiving a certain number of successes, r, in n independent trials each having only two possible outcomes and the same probability, p, of success.

thefluffmuncher · Answer

but like how would i get that into equation form?

thefluffmuncher · Answer

yeah idk the teacher said to show work

thefluffmuncher · Answer

but im not really sure how to

thefluffmuncher · Answer

but you said they were independent from each other?

thefluffmuncher · Answer

i thought it was multiplication not addition

thefluffmuncher · Answer

but then again im not really sure

thefluffmuncher · Answer

wait nvm they are mutually exclusive right?

jango_in_dtown · Answer

https://www.quora.com/If-a-fair-coin-is-tossed-8-times-Then-find-the-probability-of-getting-head-atlest-once

jango_in_dtown · Answer

read the link above

thefluffmuncher · Answer

so i can answer the question like this 
n= 8 is the number of fixed trials
there are only 2 outcomes, heads and tails
P= the probability of the coin landing on heads or tails is 50% or .5

thefluffmuncher · Answer

that what makes it a binomial distribution right

jango_in_dtown · Answer

correct

thefluffmuncher · Answer

okay ill prolly settle for that answer

thefluffmuncher · Answer

i had one more if you dont mind out helping

jango_in_dtown · Answer

post the question

thefluffmuncher · Answer

http://prntscr.com/ciu2i4

thefluffmuncher · Answer

how do i solve that one?