Suppose a candidate running for sheriff in a rural community claims that she will reduce the average speed of emergency response to less than 30 minutes, which is thought to be the average response time with the current sheriff. There are no past records; so the actual standard deviation of such response times cannot be determined. Thanks to this campaign, she is elected sheriff, and careful records are now kept. The response times (in minutes) for the first month are 27, 30, 28, 30, 25, 29, 32, 36, 23, and 24 3 . Using the 0.05 level of significance, did she keep her promise? Complete parts (a) through (c) below. Click here to view page 1 of the cutoff scores. Click here to view page 2 of the cutoff scores. . . . O B. The average response time of the new sheriff is less than the stated average response time for the old sheriff. C. The average response time of the new sheriff is the same as the stated average response time for the old sheriff. Determine the research hypothesis. Choose the correct answer below. O A. The average response time of the new sheriff is greater than the stated average response time for the old sheriff. B. The average response time of the new sheriff is less than the stated average response time for the old sheriff. O C. The average response time of the new sheriff is the same as the stated average response time for the old sheriff. Determine the cutoff sample score(s). The cutoff sample score(s) is/are (Use a comma to separate answers as needed. Round to three decimal places as needed.)\f8 1.397 1.860 2.897 1.860 2.306 3.356 9 1.383 1.833 2.822 1.833 2.262 3.250 10 1.372 1.813 2.764 1.813 2.228 3.170 11 1.364 1.796 2.718 1.796 2.201 3.106 12 1.356 1.783 2.681 1.783 2.179 3.055 13 1.350 1.771 2.651 1.771 2.161 3.013 14 1.345 1.762 2.625 1.762 2.145 2.977 15 1.341 1.753 2.603 1.753 2.132 2.947 16 1.337 1.746 2.584 1.746 2.120 2.921 17 1.334 1.740 2.567 1.740 2.110 2.898 18 1.331 1.734 2.553 1.734 2.101 2.879 19 1.328 1.729 2.540 1.729 2.093 2.861 20 1.326 1.725 2.528 1.725 2.086 2.846 21 1.323 1.721 2.518 1.721 2.080 2.832 22 1.321 1.717 2.509 1.717 2.074 2.819\fCutoff scores for the t distribution (page 2) One-Tailed Tests Two-Tailed Tests or df .10 05 .01 .10 .05 .01 26 1.315 1.706 2.479 1.706 2.056 2.779 27 1.314 1.704 2.473 1.704 2.052 2.771 28 1.313 1.701 2.467 1.701 2.049 2.764 29 1.312 1.699 2.462 1.699 2.045 2.757 30 1.311 1.698 2.458 1.698 2.043 2.750 35 1.306 1.690 2.438 1.690 2.030 2.724 40 1.303 1.684 2.424 1.684 2.021 2.705 45 1.301 1.680 2.412 1.680 2.014 2.690 50 1.299 1.676 2.404 1.676 2.009 2.678