Anderson et al. (1990) studied the effect of diet on the levelof low-density lipoprotein (LDL, the “bad” cholesterol) for a groupof men with hypercholesterolemia. Half the subjects were given adiet that included corn flakes and the other half were given a dietthat included oat bran. LDL was then measured after two weeks.Subjects were then crossed-over to the alternative diet for anadditional two weeks. LDL was measured again. The LDL measurementsare shown below. Test the null hypothesis that the mean differencein LDL points to a population in which the difference is zero,suggesting that the one diet is no better than the other forcontrolling LDL. What does the result suggest? (this can beanswered in one or two sentences)
LDL (in mmol/L) -------- Corn Flakes 4.61 6.42 5.40 4.54 3.983.82 5.01 4.34 3.80 4.56 5.35 3.89
Oat Brab 3.84 5.57 5.85 4.80 3.68 2.96 4.41 3.72 3.49 3.84 5.263.73 -----------------------
