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Question

You are conducting a study on the blood glucose levels of 9 patients who are on strict diets and exercise routines. To monitor the mean and range of the blood glucose levels of your patients, you take a blood glucose reading every day for each patient for 20 days. The results are shown below.
Day Mean RangeDayMeanRange__
192.118011100.789
290.67771296.6777
389.44731397.3375
493.33811495.8980
589.44711598.8968
6110.29016101.2288
7104.112017107.3381
8108.2931810895
9107.79819106.8977
10112.714520109.8980
The upper control limit for your chart is ________.
a) 112.70
b) 116.18
c) 130.32
d) 145
e) 121.3

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