Chapter Six

Question 1

Why do we use the central limit theorem (CLT)

Answer 1

It replaces bootstrap and randomization distributions

Question 2

Pooled proportion

Answer 2

We assume proportions are the same between two groups and user 1 proportion to guess what it’d be if they’d be equal

Question 3

T- distribution

Answer 3

Used for means

Question 4

Conditions for the t-distribution

Answer 4

N has to be large enough or the population has to be normally distributed.

Question 5

Degrees of freedom

Answer 5

n -1

The higher the degree of freedom, the closer the t-distribution is to the standard normal

The smaller, the fatter the tales