We want to examine the influence of administering 100 g glucose on the glucose level in the blood of diabetic patients. Using confidence intervals we will try to formulate a conclusion on this research question.

The glucose level of 8 diabetic patients was measured in mmol/l, both before and 1 hour after administration of 100 g glucose. The following table gives the concentration plasma glucose in mmol/l for all 8 patients. The data can also be found in the file glucose.dat.

Read in dataset glucose.dat via the following command (pay attention to the directory)

glucose = read.table("glucose.dat", header = TRUE)
attach(glucose)