Question

Ten students are applying for 3 positions on a team. the students include 4 boys (adam, alex, anthony, and arnold) and 6 girls (abbey, aurora, agnes, alice, amanda, and anna). all the students have an equal chance of being selected. find the probability that the students selected will include: a) 3 girls b) 1 boy and 2 girls c) at most 1 girl d) adam, anthony, and alice e) agnes and 2 other students

Answer 1

there are 6 girls

Answer 2

6 choose 3 / 10 choose 3

Answer 3

there are 6 girls, you need to choose 3 of them, where order does not count. thats 6 choose 3 . that will be your numerator (the favorable event). the denominator is the total possible 3 positions from the set of 10 kids, so thats 10 choose 3

Answer 4

thats for part a)

Answer 5

part b) you want 1 boy and 2 girls.
there are 4 boys in total, so you want to choose 1 boy. This is 4 choose 1. now for each one of these choices you want to pick 2 girls out of 6 ( 6 choose 2). so multiply them
4 choose 1 * 6 choose 2 . this is your numerator. the denominator is like before 10 choose 3

Answer 6

adam anthony? and agnes, not sure about that one

Answer 7

how about part c and e?

Answer 8

well i got you started

Answer 9

this is the proper question

Ten students are applying for 3 positions on a team. the students include 4 boys (adam, alex, anthony, and arnold) and 6 girls (abbey, aurora, agnes, alice, amanda, and anna). all the students have an equal chance of being selected. find the probability that the students selected will include: a) 3 girls b) 1 boy and 2 girls c) at most 1 girl d) adam, anthony, and alice e) agnes and 2 other students

Answer 10

Hey, do you have the answers to this, in the book

Answer 11

no

Answer 12

so how do you know if its right

Answer 13

this is a worksheet

Answer 14

how do u do c,d,e

Answer 15

at most one girls is 0 girls or 1 girl

Answer 16

1 girl

Answer 17

at most 1 is number of ways to count with 0 girls + number of ways to count with 1 girl

Answer 18

4c0 + 4c1 / 6c3???

Answer 19

no

Answer 20

if there are no girls, then the other 3 people chosen must be boys

Answer 21

ill be back in an hour

Answer 22

wait

Answer 23

what is it then