Question

7. Complete the following with increases, decreases, or remains the same.

a) As the sample size increase, the confidence interval _______________

b) As the margin of error increases, the standard deviation _____________

c) As the confidence increases, the sample size _____________ in order to maintain the same margin of error.

d) As confidence increases, the standard deviation _____________

e) As confidence level increases, the margin of error _____________

Answer 1

as the sample size increases the confidence interval decreases because standard error decreases.

as the margin of error increases the standard deviation increases.

as confidence increases sample size decreases in order to maintain same margin of error.

d) as confidence level increases standard deviation decreases.however, width increases with increase in standard deviation

as confidence level increases margin of error decreases.