hypothesis testing

Question 1

define significance level

Answer 1

the probability of rejecting the null hypothesis when in fact it is true

Question 2

2 ways of identifying outliers

Answer 2

• +/- 2 standard deviations from the mean
• (LQ-1.5IQR, UQ+/-1.5IQR)

Question 3

what must be true for x to follow the binomial distribution

Answer 3

all trails are independent of one another
all trials have a fixed probability

Question 4

when is a result significant

Answer 4

when less than the significance level