This question: 10 point(s) possible The following data represent the muzzle velocity (in feet per second) of rounds fired from a 155-mm gun. For each round, two measurements of the velocity were recorded using two different measuring devices, resulting in the follow below Observation 1 A B 2 3 4 5 794.4 790.4 792.1 790.5 794.6 791.1 801.1 786.1 800.4 786.0 801.4 788.4 6 D Click the icon to view the table of critical t-values. a) Why are these matched-pairs data? OA. All the measurements came from rounds fired from the same gun. OB. The same round was fired in every trial. OC. The measurements (A and B) are taken by the same instrument. D. Two measurements (A and B) are taken on the same round. b) Is there a difference in the measurement of the muzzle velocity between device A and device B at the a=0.01 level of significance? Note: A normal probability plot and boxplot of the data indicate that the differences are approximately Let d, A, B, Identify the null and alternative hypotheses. Ho Pa = 0 H Hd 0 Determine the test statistic for this hypothesis test. (Round to two decimal places as needed.) Find the critical value(s) for this hypothesis test. (Use a comma to separate answers as needed. Round to two decimal places as needed.) What is your conclusion regarding Ho? Do not reject Ho. There is not sufficient evidence at the a = 0.01 level of significance to conclude that there is a difference in the measurements of velocity between device A and device B. c) Construct a 99% confidence interval about the population mean difference. Compute the difference as device A minus device B. Interpret your results. The confidence interval is (OD). (Round to two decimal places as needed.) Internent the manfidanan intanial Chanan the anant anawar kalow LG ve Vi (0,0) + More Time Remainin