SOLUTION: 15% of the population is right handed, how do you find the probability of surveying 80 students and getting exactly 6 right handed students? How do I set my equation up?

Algebra.Com
Question 1037972: 15% of the population is right handed, how do you find the probability of surveying 80 students and getting exactly 6 right handed students?
How do I set my equation up?

Answer by Boreal(15235)   (Show Source): You can put this solution on YOUR website!
80C6*(0.15)^6*(0.85^74)
How many ways to choose 6 from 80, and each of those 6 has a 15% probability; each of the 74 has an 85% probability. The expected value is 80%0.15 or 12, so this will be a small probability, both because the probability of each individual one is low and second because it is not near the expected value.
It is 0.0205

RELATED QUESTIONS

15% of the population is left-handed. Find probability of surveying n students and... (answered by Boreal)
Binomial Distribution- 15% of the U.S. population is left-handed. Randomly select 10... (answered by solver91311)
Assume 20% of the population are right handed and the remainder are left handed. If you... (answered by sudhanshu_kmr)
15% of the U.S. is left handed. You randomly select 10 people and let x represent the... (answered by Edwin McCravy)
Suppose that you are in a class of 33 students and it is assumed that approximately 17%... (answered by stanbon)
Suppose that you are in a class of 31 students and it is assumed that approximately 16%... (answered by Boreal)
Data shows that 90% of the people in a certain population are right-handed. A group of 8... (answered by Fombitz)
Assume that 30% of the population is left-handed and the remainder is right-handed (there (answered by amnd)
given that 10% of us are left handed, find the probability of getting 3 left handed... (answered by stanbon)