Wednesday

October 1, 2014

October 1, 2014

Posted by **please help me!** on Tuesday, March 23, 2010 at 2:19pm.

In a local college, 20% of the math majors are women. Ten math majors are chosen at random.

1) What is the probability that exactly 2 are women?

2) What is the probability that 2 or less women are selected?

3) What is the probability that no women are selected?

4) Find the mean u

- statistics -
**MathGuru**, Thursday, March 25, 2010 at 8:18pmHere is the binomial probability function:

P(x) = (nCx)(p^x)[q^(n-x)]

n = 10

p = .20

q = .80 (q = 1 - p)

For 1), find P(2).

For 2), find P(0) + P(1) + P(2).

For 3), find P(0).

For 4), mean = np

I hope this will help get you started.

**Answer this Question**

**Related Questions**

statistics - Find the indicated binomial probabilities. Round to the nearest 3 ...

math - In a local college, 60% of the math majors are women. Fifteen math majors...

math - 65 men 75 women are enfolled in calculus. There are 30 business majors, ...

Math - 4 accounting majors, 2 economics majors and 3 marketing majors have an ...

Math - 4 accounting majors, 2 economics majors, and 3 marketing majors have ...

statistics - At a certain college, there were 400 science majors, 100 ...

statistics - at a certain college, there were 700 science majors,100 engineering...

LBCC - At a certain college, there were 780 science majors, 320 engineering ...

stat probability - At a certain college, there were 780 science majors, 320 ...

statistics - What is the probability that a student in a college of 650 students...