Question

PLEASE HELP LAST PROBLEM!
In a region there is a 0.95 probability chance that a randomly selected person of the population has brown eyes. Assume 15 people are randomly selected.

a) Find the probability that all of the selected people have brown eyes.
b) Find the probability that exactly 14 of the selected people have brown eyes.
c) Find the probability that the number of selected people that have brown eyes is 13 or more.

Answer 1

u got the answer for the last problem.

Answer 2

yeah thank you for helping!

Answer 3

for me it came around 9999. 20 something

Answer 4

hey this problem is same like the before

Answer 5

i think p(0)=0.05

Answer 6

@Hero

Answer 7

howd you figure that?

Answer 8

p(1)=15*0.95*0.05^14

Answer 9

do you know how to find the first one?

Answer 10

@ganeshie8 @kropot72 this is my last problem then im done for the night

Answer 11

P = nCx*p^x*q^x use this formula

Answer 12

see p- probabiltiy of success,and q-probability of failure

Answer 13

so plug those into that formula above?

Answer 14

yes .p =95/100 q=5/100

Answer 15

n=15 so 15c14 *0.95^14*0.05^1

Answer 16

0.3657 is the answer for case 2)?

Answer 17

thats for b?

Answer 18

yes.is it right?

Answer 19

It wont let me see the answers but i can check another way possibly

Answer 20

yes! thats right

Answer 21

for first one a) is 15c15 *0.95^15*0.05^0

Answer 22

so for first a)=0.4632 right?

Answer 23

let me see!

Answer 24

yes!! :)

Answer 25

then third case can u do that

Answer 26

thats what im trying to figure out

Answer 27

the or more might get me but let me take a swing at it

Answer 28

15c13*0.95^13*0.05^1 ??

Answer 29

wrong its 15 C13*15c13*0.95^13*0.05^2

Answer 30

thank you @tejasvir

Answer 31

anytime:)

Answer 32

hmm idk if my answer is right?

Answer 33

i got 14.1489

Answer 34

nope

Answer 35

check it again

Answer 36

i checked it over again and i still have the same answer plugging it in like that @dg2

Answer 37

i got 0.2695 :-) u should square 0.05

Answer 38

hmm i must just be plugging it in wrong somehow :/

Answer 39

but i really appreciate you working me through this whole problem! you helped me out a ton :)

Answer 40

what was the number after the 5?

Answer 41

0.269504

Answer 42

was it?

Answer 43

okay thanks! i needed to round to 3 decimal places!

Answer 44

is it right?

Answer 45

.964

Answer 46

but i passed my quiz and thats all that matters :)

Answer 47

yw:)

Answer 48

thank you so much!!! :)

Answer 49

:)