Question

help please******************

Answer 1

any ideas?

Answer 2

if we were to randomly pick 3 people, who are we most likely to pick?

Answer 3

so you're very unlikely to pick the people making a lot of money

that makes me think you'd have a distribution centered on the left end of the pay scale

Answer 4

as your sample size grows, it becomes more probable to pick a high earner, thereby skewing the distribution to the right

however, with a very large sample, the distribution of sample means will become more and more normal. So a large sample will have somewhat symmetric look to it

Answer 5

this is due to the central limit theorem

Answer 6

actually, the sample size for n = 3 will be very skewed to the right

Answer 7

because of the small chance of picking a high earner

Answer 8

so you start off very skewed, but as n grows, the distribution gets more symmetrical

Answer 9

n = 10 is still skewed, but not as skewed as n = 3

Answer 10

n = 50 is at this point pretty normal (maybe not completely)

the common threshold is n = 30

anything above n = 30 will have a sampling distribution that's approximately normal

Answer 11

you're welcome