Question

can anyone check my work?

Answer 1

yeah

Answer 2

its about stat

Answer 3

yeah i no

Answer 4

i cant open the attachment

Answer 5

i have done that,

Answer 6

i just want to know

Answer 7

Are the probabilities you calculated in (b) and (c) exact or approximate? Explain.

Answer 8

they are approximate since you have decimal approximations

Answer 9

are the calculations correct?

Answer 10

can I say it like this?

Answer 11

The probabilities are approximate. Because it follows a normal distribution, as n increases, the sampling distribution of x bar approaches a normal distribution.

Answer 12

that's correct, you're using the central limit theorem

Answer 13

what if its skewed to the right?

Answer 14

i mean non normal x bar

Answer 15

if it was skewed to the right, then you wouldn't use a normal distribution

Answer 16

wait

Answer 17

I mean question like that

Answer 18

Are the probabilities in (b) and (c) exact or approximate?

Answer 19

they would be approximate as well

Answer 20

how should I explain it?

Answer 21

?

Answer 22

well you have decimal approximations, which is close to the real thing, but not exactly there

Answer 23

it's like saying 0.667 is a decimal approximation to 2/3

Answer 24

The probabilities are approximate. Because it follows a normal distribution, as n increases, the sampling distribution of x bar approaches a normal distribution.

Answer 25

so the same thing?

Answer 26

yes exactly

Answer 27

ok got it thank you very much

Answer 28

yw