Binomial games
A coin is flipped 10 times whats the probability of it landing on heads 4 times and tails 6?
P(x=4)=210(0.0625)(0.015625)=0.2051
In the binomial notation, what does the value of n represent?
The number of trials.
Find P(X=4), when n=5, p=0.25, q=0.75,
P(X=4)=0.014648.
What is the probability of getting heads on a fair coin?
1/2
In a bookshelf there are 200 books, 50 of which are the same book. What is the probability of choosing the same book in the bookshelf two times in a row, when randomly choosing?
P(x=2)=C(2,2)*(1/4)^2*(3/4)^0=1/16=0.0625
When solving a binomial probability, the variable X represents what?
The number of successes.
P(x=4) when n=7, p=0.4
P(x=4)=0.193536
What is the probability of getting a 6 on fair six sided die?
1/6
Find the probability of getting exactly six "2"s in 10 rolls of a fair die.
P(x=6)=C(10,6)(1/6)^6(5/6)^4=0.00217
When solving a binomial probability the variable p represents what?
The probability of success.
P(X>=2) where n=3, p=0.5, q=0.5, R=2.
P(X>=2)=0.5
What is the probability of getting a queen in a standard 52 card deck?
4/52=1/13.