Wednesday

April 16, 2014

April 16, 2014

Posted by **Jon** on Wednesday, April 1, 2009 at 10:29am.

A) All 3 selected are men

B) all 3 selected are women

C) 2 men and 1 woman will be selected.

D) 1 man and 2 woman will be selected

- math -
**bobpursley**, Wednesday, April 1, 2009 at 10:41amAre they selected randomly?

If randomly, which would be an unusual way of selecting folks for training (think about that)..

a) 3/7 * 2/6 * 1/5

c) you can select those several ways..

m, m, w

m,w,m

w,m,m

so, probab=3/7*2/6*4/5 + 3/7*4/6*2/5 + 4/7*3/6*2/5 = amazing..3ways*4*3*2/7*6*5

You probably have some combination formulas for this in your text.

- math -
**Jon**, Wednesday, April 1, 2009 at 11:00amI doubt order matters. And there is no formula given in the text. So I was thinking for A it would be 3/ 7 since there are 3 men out of the possible 7 chosen executives.

- math -
**Reiny**, Wednesday, April 1, 2009 at 1:39pmI do these by using combinations (since order does not matter)

e.g. #1

prob = C(3,3)/C(7,3) = 1/35

b) C(4,3)/C(7,3) = 4/35

c) C(3,2)*C(4,1)/C(7,3) = 3*4/35 = 12/35

d) C(3,1)*C(4,2)/C(7,3) = 3*6/35 = 18/35

**Related Questions**

gr12 math - froma group of 6 ladies and 4 men, determine in how many ways a ...

math - from a group of women and 4 men, determine in how many ways a committee ...

math - Please help I have been working on this one problem for days. From the 9...

math - In a group of 7 men and 8 women, how many committees of 5 can be selected...

math word problem - There are 10 women and 8 men in a club. How many different ...

statistics - A person is selected at random from a population that has the ...

Maths - Eleven people, 7 men and 4 women, successfully completed their study at ...

Math - I'm really struggling with how to set this up: A company has 18 members ...

stats - Among the contestants in a competition are 44 women and 26 men. if 5 ...

statistics - Among the contestants in a competition are 44 women and 26 men. if ...