Question

Statistics question.

Answer 1

l

Answer 2

@inkyvoyd

Answer 3

do you know the empirical rule?

Answer 4

no

Answer 5

68-95-99.7 rule? ever heard of it?

Answer 6

yes

Answer 7

so for the first problem, can you tell how many standard deviations we are talking about?

Answer 8

2

Answer 9

yeah... it's actually within 1 standard deviation though so we take 68% here

Answer 10

ok then what?

Answer 11

so that means we are taking 68% of the population right?

Answer 12

yes

Answer 13

what is the population though?

Answer 14

2000

Answer 15

so how many people is 68% of 2000?

Answer 16

haha one sec lol

Answer 17

1360

Answer 18

yup :)

Answer 19

ok cool great ty! could u help me with the rest lol cuz i got to be done tonight with these lol

Answer 20

so the standard deviation is the square root of the variance, right?

Answer 21

yes

Answer 22

so what's teh variance int he second problem?

Answer 23

sorry im back lol

Answer 24

sample variance is 25

Answer 25

and the standard deviation?

Answer 26

it does not say

Answer 27

nope, but isn't the standard deviation the square root of the variance?

Answer 28

haha yah ok one sec

Answer 29

so its 5

Answer 30

and 68 percent is within how many standard deviations according to the rule?

Answer 31

yes

Answer 32

do i do what i did in the last problem?

Answer 33

kind of... 68 percent is within one standard deviation

Answer 34

yah, let me se one sec

Answer 35

can we find population with mean, standard variance and standard deviation?

Answer 36

ugh you win it's the fourth one.

Answer 37

ughh lol could u just tell me how u got it lol

Answer 38

and ty

Answer 39

68 percent means 1 standard deviation. if variance is 25 than standard deviation is 5. if the mean is 25, then mean plus or minus one standard deviation is (20,30)

Answer 40

ahh ok lol, could u help with som emore plz?

Answer 41

I'm sleepy sorry

Answer 42

haha ok lol ty soo much!

Answer 43

np