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The insulin pump is a device that delivers insulin to a diabetic patient at regular intervals. It presumably regulates insulin better than standard injections. However, data to establish this point are few especially in children. ,The following study was set up to assess the effect of use of the insulin pump on HgbA1c, which is a long term maker of compliance with insulin protocols. In general, a normal range for HgbA1c is <7%. ,Data were collected on 256 diabetic patients for 1 year before and after using the insulin pump. A subset of the data for 10 diabetic patients is give in table 8.40,Table 8.40 ,,ID Mean HgbA1c Mean HgbAlc before-after%, 1 year before% 1 yr. after% ,1 6.7 7.0 -0.3,2 7.4 7.4 0,3 9.2 8.6 0.6,4 9.6 8.1 1.5,5 7.4 6.8 0.6,6 8.1 7.0 1.1,7 10.8 8.5 2.3,8 7.1 7.7 -0.6,9 7.9 9.7 -1.8,10 10.8 7.7 3.1,Mean 8.5 7.9 0.65,sd 1.5 0.9 1.44,,8.164). Perform the test in Problem 8.163, and report a two tailed p – value. ,(8.163). What test can be used to compare the mean HgbA1c 1 year before vs. mean HGBa1C 1 year after use of the insulin pump?),

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