Solutions Statistics

During a recent flu epidemic, volunteer patients participated in an investigational study comparing

Question: During a recent flu epidemic, volunteer patients participated in an investigational study comparing how long certain brands of pain reliever reduce fever. The results were as follows for six brands. At the 5% level of significance, it is reasonable to claim that all are apparently equally effective at reducing fever?

Brand A	Brand B	Brand C	Brand D	Brand E	Brand F
4.75	5.5	5.2	8	7.3	9.5
5	8	7.2	6.5	4.7	6.2
6.2	7.4	5.8	7	5.1	8.8
7	4.9	6.4	5.8	6.9	5.45
	6	5.25	6	4.8	7.75
		4.8	4.2		6.15
			5
			7.6