SOLUTION: "Suppose that the probability that any random freshman girl will agree to go with Sam to the senior prom is 0.1. Suppose Sam asks 10 random freshman girls to the prom. On average,
Algebra.Com
Question 1073370: "Suppose that the probability that any random freshman girl will agree to go with Sam to the senior prom is 0.1. Suppose Sam asks 10 random freshman girls to the prom. On average, how many freshman girls will agree to go with Sam to the prom?"
I understand that n=10 and p=.1 but I don't understand how to figure out the average.
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
average is n * p = 10 * .1 = 1
standard error is sqrt(n * p * q) = sqrt(10 * .1 * .9) = .94868...
this is normal distribution of a proportion.
here's a reference.
"_blank">http://www.math.ubc.ca/~feldman/m302/binomial.pdf
lots of math in there, but the punch line is what's enclosed in the boxes.
mean = n * p.
variance = n * p * q
q = 1 - p
standard deviation is sqrt (n * p * q)
RELATED QUESTIONS
70% of girls want to go to prom and 40% of boys want to go to prom. Is it possible that... (answered by scott8148,ankor@dixie-net.com)
A football team consists of 20 freshmen and 20 sophomores, 15 juniors, and 10 seniors.... (answered by ewatrrr)
The table shows the percentage of college students who prefer a given pizza topping.... (answered by stanbon)
At Med U. the failure rate is 20%. Of 15 students registered in the freshman class;... (answered by ewatrrr)
Suppose that, for students who are enrolled in college algebra, 71 percent are freshmen,... (answered by edjones)
a football team conists of 20 each freshmen and sophmores, 15 juniors, and 10 seniors.... (answered by stanbon)
A football team consists of 19 each freshmen and sophomores, 14 juniors, and 17 seniors.... (answered by Boreal)
Suppose that 30% of students are freshmen, 60% own a car, and 10% are freshman and own a... (answered by stanbon)
zccording to the national center fo health statistics, each time a baby is born, the... (answered by stanbon)