Glucose Tolerance Physicians depend on laboratory test results when managing medical problems such as diabetes or epilepsy. In a uniformity test for glucose tolerance, three different laboratories were each sent nt = 5 identical blood samples from a person who had drunk 50 milligrams (mg) of glucose dissolved in water. The laboratory results (in mg/dl) are listed here:
Lab 1
Lab 2
Lab 3
120.1
98.3
103.0
110.7
112.1
108.5
108.9
107.7
101.1
104.2
107.9
110.0
100.4
99.2
105.4
a. Do the data indicate a difference in the average readings for the three laboratories?
b. Use Tukey’s method for paired comparisons to rank the three treatment means. Use a = .05.
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