Question

According to a recent survey , about 1 in 3 new cars is leased rather than bought .What is the probability that 3 of 7 random select new cards are leased?

Answer 1

Nancy your Looking Good

Answer 2

ohhhh I read it wrong

Answer 3

good what?

Answer 4

this is binomial i believe

Answer 5

1/3*3/7=2/21=1/7
I think that is right.

Answer 6

*3/21*

Answer 7

3/21

Answer 8

binomial experiments

Answer 9

we can use the ^7 coeffs to help out

14641
15101051
1 6 15 20 15 1
1 7 21

there definiantly a 21 in it

Answer 10

.2561 perhaps?

Answer 11

the key is ; 560/2187

Answer 12

\[nCr(p)^r(1-p)^{n-r}\]

Answer 13

you answer is correct,Please! explain how you get answer I don't get it

Answer 14

7C3 = 35

(1/3)^3

(2/3)^4

Answer 15

i have to remember why its right first lol

Answer 16

n=?
r=?
p=?

Answer 17

n = 7 in this case since there are 7 places to populate

r = 3 since you want 3 of them to be 1/3

p = the proportion of success; 1 in 3 = 1/3

Answer 18

TY

Answer 19

I get it now