Tuesday

July 29, 2014

July 29, 2014

Posted by **please help me!** on Tuesday, March 23, 2010 at 2:20pm.

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

5) Find the variance o2

- statistics -
**Reiny**, Tuesday, March 23, 2010 at 5:08pmPrb(woman) = .2

prb(man) = .8

1)choosing 10 ...

prob(exactly 2 women) = C(10,2)(.2)^2(.8)^8

= .302

etc.

Also look at the reply to the next post, I think it is your post.

**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...