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
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Lab 2
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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.