In a local college, 20% of the math majors are women. Ten math majors are chosen at random. How do you find the mean and the variance?

1 Answer
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

1
Feb 9, 2018

Mean, #\mu = n*p = 10*0.2 = 2#

Variance, #s = n*p*(1-p) = 10*0.2*(1-0.2) = 1.6#

Was this helpful? Let the contributor know!
1500
Trending questions
Impact of this question
15 views around the world
You can reuse this answer
Creative Commons License