ap stats -- unit 5

shows the statistic found for all possible samples of size n

increase n, decrease variability

proportions (p hat)

sample means (x bar)

p^

randomization

independence

10% condition

~Normal

if we can expect at least 10 successes and failures then the sampling distribution of p^ is ~Normal

in a skewed population, increasing the n makes the distribution closer to ~Normal

n≥30 is sufficient to apply CLT

~Normal - population distribution is ~N or n≥30 and CLT applies

randomization

independence (10% condition)