Ask a New Question

Question

An unbiased die is thrown seven times. Find the probability of throwing it at least five six's.
11 years ago

Answers

MathMate
Use binomial distribution.
P(r)=nCr*(p^r)(q^(n-r))

n=7
p=1/6
q=1-1/6=5/6

we need to calculate
P(5)+P(6)+P(7)
P(5)=7C5*(1/6)^5*(5/6)^2
=0.001875
P(6)=1.25*10^-4
P(7)=3.57*10^-6
11 years ago
Anonymous
0.005
9 years ago

Related Questions

an unbiased coin is tossed 3 times. find the probability that the coin lands heads exactly once. Why are unbiased estimators preferred over biased estimators? An unbiased dice is thrown 10 times. Let X be the number of sixes obtained. Find: C) P(X<mean)... an unbiased die rolled n times. what is the probability that the product of the scores is an even nu... When throwing an unbiased die, the probability of getting a number >5 is When throwing an unbiased die, the probability of getting a prime number is 23. When throwing an unbiased die, the probability of getting a number < 2 is: A. 1/6 B.2/6... 24. An unbiased die is thrown once. What is the probability to get a cube number on top? A. 0/6... 2. Biased vs Unbiased Was independent and unbiased judge/jury shown in Lindy chamberlain case?yer or no?
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use