Confidence Intervals

Question 1

How to find z*

Answer 1

look on the table to the z* row and match it up with the c

Question 2

conf interval interpertation

Answer 2

if we took repeated samples of the same sample size, and constructed an (CONF LVL) % confidence interval in a simmilar manner, then (CONF LEVEL) of said intervals would contain the true mean mu

Question 3

m

Answer 3

is the margin of error, will either be given or will be sigma/root n for z or s/root n for t

Question 4

K

Answer 4

K = big m / small m

Question 5

inverse squares relationship

Answer 5

if we change m by K, then we inversly change n by ksquared. so m goes dowm, n goes up by ksquared and vice versa