11. [-11 Points] DETAILS MENDSTATCZ B.MC.010. MY NOTES ASK YOUR TEACHER Which of the following best denes an interval estimate? a. on is an estimate of a population parameter that is expressed as a range of values within which the unknown but true parameter presumably lies. b. Olt is a sample statistic such that the mean of all its possible values equals the population parameter the statistic seeks to estimate. c. OIt is the sum of an estimator's squared bias plus its variance. d. Olt is the sum of an estimator's squared bias plus the population mean a. e. on is a sampling procedure that matches each unit from population A with a "twin" from population B so that any sample observation about a unit in population A automatically yields an associated observation about a unit in population B. Need Help? _ 12. [-11 Points] DETAILS MEN DSTATCZ 8.MC.D11. MY NOTES ASK YOUR TEACHER When estimating a population mean u, where the population standard deviation 0' is known, we can: a. Ochoose a largerz value, construct a wider condence interval, and achieve a lower condence level b. Odefine the limits of an interval estimate of u as )7! t zany/V; c. Ochoose a smallerz value, construct a narrower confidence interval, and achieve a higher condence level d. Odene the limits of an interval estimate of u as 2? s: tan-Sin Need Help? _ 13. [-11 Points] DETAILS MEN DSTATCZ 8.MC.016. MY NOTES ASK YOUR TEACHER The role of the sample mean E in a confidence interval estimate for the population mean u is to determine the: a. Osample size needed b. Ocundence coefficient 1 - a c. Omargin of error in the estimate d. Call of these e. Onone of these Need Help? 14. [-11 Points] DETAILS MEN DSTATCZ 8.MC.017. MY NOTES ASK YOUR TEACHER If the population standard deviation 0' is known and we wish to estimate the population mean u with 95% condence, what is the appropriate critical value 2 to use? a. 01.645 b. 01.96 c. 0128 (1.02.58 e. 0233 Need Help? 15. [-11 Points] DETAILS MEN DSTATCZ 8.MC.D1B. MY NOTES ASK YOUR TEACHER If the population standard deviation 0' is known and we wish to estimate the population mean u with 90% condence, what is the appropriate critical value 2 to use? a. 01.95 b. 01.645 c. 0128 d. 02.33 e. 02.53 .I ....-m