please help with probability( statistics! binomial)

see attachment

Question

please help with probability( statistics! binomial)

see attachment

anonymous · Answer

not binomial

anonymous · Answer

binomial is a repeated experiment where there are only two possible outcomes, the probabilities don’t change and the events are independent

anonymous · Answer

in this case, if you are dealt a diamond on the first card, the probability the second card is a diamond is not the same as the probability the first card was

bambimonster · Answer

@satellite73

bambimonster · Answer

@agent0smith

agent0smith · Answer

1. There is a fixed number of trials - you're only tossing 5 coins and then stopping.

bambimonster · Answer

so it is a binomial?
how about the rest

agent0smith · Answer

2. Excellent answer.

bambimonster · Answer

thank you! and what about 3?

bambimonster · Answer

for 2. n=5 p =0.5?

agent0smith · Answer

What's the probability of rolling a 3? There's one 3, and six total outcomes.

Probability of not rolling a 3, is 1 - P(3)

bambimonster · Answer

so is it 0.4? sorry im very bad in probability

bambimonster · Answer

like p(3)=1/6?  so 1-1/6=5/6 ?

agent0smith · Answer

Correct.

bambimonster · Answer

okie thanks.. and for the third question is my answer correct?

agent0smith · Answer

For 3, I'm not sure that can be binomial since you don't know the probability... but i guess it's reasonable to assume the probability is 50% for picking a woman.

bambimonster · Answer

okay so is my n and p correct? n=20 p=0.5

agent0smith · Answer

Yeah, i think it's a reasonable answer.

bambimonster · Answer

sorry just one more.. for 1.st question: n=5 p=0.8?

agent0smith · Answer

How'd you get 0.8? What's the probability of getting a heads when you flip a coin?

bambimonster · Answer

erm 1/2

agent0smith · Answer

Correct :) and what the hell is a loonie, that sounds like a made-up coin...

bambimonster · Answer

so its 0.5? i tot i will have to consider the type of coins used.. and since there was 5 types i tot i ll have to use 1-1/5. but i guess not.. and loonies are a dollar in canada :)

bambimonster · Answer

thanks alot !! @agent0smith

agent0smith · Answer

No, they're all just coins with heads and tails, p=0.5 regardless of how many different types of coins there are. The question would be the same if it said "you toss five quarters"

lol, a loonie... wtf haha.

agent0smith · Answer

The probability of getting a head on each coin is 0.5, regardless of the number and type of coins.

bambimonster · Answer

thank you very much!