If you were not told what Confidence Level to use, you should choose ______. a)
ID: 3267232 • Letter: I
Question
If you were not told what Confidence Level to use, you should choose ______. a) 99% because it is the default level to use when you are not given a confidence level. b) 95% should be used when the confidence interval involves data related to health or medical fields c) 80% because it provides the smallest interval. d) 95% because it is the default level to use when you are not given a confidence level. If you calculated a 98% confidence interval and a 92% confidence interval using the same mean, standard deviation and sample size the _________ a) 98% confidence interval will be wider than the 92% confidence interval. b) 92% confidence interval will be wider than the 98% confidence interval c) 92% confidence interval and the 98% confidence interval will have the same margin of error. d) margin of error is not affected by the confidence level. How does a larger sample size affect the margin of error and how does the larger sample size affect the confidence level. a) The larger sample size will decrease the margin of error and cause the confidence interval to be narrower. b) The larger sample size will increase the margin of error and cause the confidence interval to be narrower. c) The larger sample size will decrease the margin of error and cause the confidence interval to be wider. d) The larger sample size will increase the margin of error and cause the confidence interval to be wider.Explanation / Answer
Question 1 :
Answer (d) 95% because it is the default level to use when you are not given a confidence level.
Question 2 :
Answer (a) 98% confidence interval will be wider than the 92% confidence interval.
Question 3 :
Answer (a) The larger sample size will decrease the margin of error and cause the confidence interval to be narrower.