Question

Statistics Help Please

Answer 1

dont we expect that 44% of 1400 define the mean of the sample?

Answer 2

So 616 would be the mean? 0.44*1400?

Answer 3

yes

Answer 4

consider this as a binomial distribution, what is the standard deviation for a binom distribution?

Answer 5

mean = np

sd = ???

Answer 6

Is the formula Square root of p(1-p)/n or the square root of np(1-p)?

I am stuck between those two.

Answer 7

sqrt(npq) and we can get to that using proportions, but thats prolly immaterial

Answer 8

since np = mean ... is 616

sqrt(616(.56))

Answer 9

18.57

Answer 10

yeah, that works for me

Answer 11

Alright thank you!

Answer 12

youre welcome